Skin protect deeper tissues in forms of
chemical biologically and is a physical/mechanical barrier
skin helps get rid of
heat and holds heat
skin has many receptors that
detect change
skin absorbs V-D that
increases active absorption of calcium
Body temperature regulation if temperature increases
blood flow and sweet increase
Body temperature regulation if temperature decreases
blood flow decreases
Artrtiavenous anastomosis is a
connection
cardinal sign of tissue damage
anytime there is tissue damage
inflammation blood flow increases and capillaries become more
permeable
inflammation is a Reaction of living tissue
damage
when you cut into the dermis you cut
blood vessles
in healing of cuts fibroblasts migrate into area and make
collagen fibers
the symptoms of a first degree burn is
redness, swelling and pain
symptoms in second degree burn
blistering, redness swelling and pain healing time a month
symptoms in third degree burn
destroy epidermis and dermis loss of skin discoloration loss of fluid burn area is not painful but surrounding areas are high infection rate
Fibroblast make collagen fibers to
speed healing binding edges of wound
remove dead tissue and debris
Phagocytic cells in skin
- is limited to epidermis, sun exposures no scaring sunburn
1st degree burn injury
damage to epidermis and dermis Blistering 3-4 weeks heal time
2nd degree burns
biggest concern on a 3rd degree burn is
loss of fluids leading to dehydration and infection
grafted skin may be attacked by immune system using what kind of treatments?
homograph
corey was in texas and burned shoulders bad couldnt wear a
shirt
treatment of skin from same person places over burns
Autograph
treatment of cadaver skin. skin substitute non skin membrane
Homograph grafting
Rule of 9 is
analyzing burn damage body regions cover 9% or multiply of 9%
the whole head makes up % of body
9% 4 1/2% front and back
Total trunk makes up % of body
36% 18% front and back
each arm makes up % of body
9% 4 1/2 % front and back
each leg is % of body
9% 18% front and back total legs is 36%
perineum is % of body
1%
Scabs are
dried clotted blood
in deeper cuts blood vessels broken pooled blood clots when blood slows down fibroblast make fibers to bind wound together blood vessels regrow in area phagocytes remove dead tissues damaged tissue is replace by new tissue
Healing process
In bone you have living cells so bone is
A living tissue
Mane function is to make
framework and structure for the body
muscles pull on bones to cause
movement
are living, dynamic tissues that are constantly changing
Bones
is a slow process
repairing cartlege
lacuna are openings in the
cartilage matrec is wear the cells libe
Skeletal bones account for % of body mass
20%
Support (framework)protection. Movement. Storage. Minerals. Growth factors. Lipids. Blood cell formation
Functions of bone
No nerves or blood vessels. Chondrocytes in lacunae.
Skeletal Cartilages
perichondrium is what kind of tissue
dense irregular tissue
perichondrium is not found around
articular or fibrocartilage cartliage
perichondrium has
nerve endings and is vascular
Chondrocytes in the lacunae
maintain cartilage matrix
is mostly dense irregular tissue that surrounds cartilage
Perichondrium
Peri means
around
Perichondrium is
vascular
is not around fibrocartilage or articular cartilage
Perichondrium
is hyaline cartilage that is on an articulated surface of a bone
Articular cartilage
cartilage growth ceases in adolescents when
skeleton stops growing
two bones come together
Articular surface
mostly dense irregular tissue that surrounds cartilage. Have nerves and blood vessels. Not present around fibrocartilage or articular cartilage.
Perichondrium
The flexible matrix of cartilage can accommodate cellular growth via mitosis
Cartilage Growth
growth outside along and around edges
Appositional growth
when chondroblast convert into chondrocytes you?
you stop growing chondrocytes maintain
chondroblast are
cells that form cartilage that produce the cartilage matrix
growth in the middle of the cartilage interior
Interstitial growth
Cartilage growth
usually ceases in late adolescence when skeleton stops growing
Compact (cortical) matrix is Dense thick and smooth in appearance
Osseous (Bone) Tissue:
common name for compact bone is
cortical
common name for spongy bone is
cancellous
Cells that form cartilage that produce the cartilage matrix
Chrondroblast
when chrondroblast convert into chondrocytes
You stop growing
thick Dense and smooth in appearance
Osseous (Bone) Tissue: Compact bone (cortical)
Open, sponge-like appearance & Trabeculae are thin branching bars. Inner portion of the bone
Spongy (Cancellous) bone
Trabeculae meaning
arms
bone forming cells builds bone. Matrix-synthesizing cell responsible for bone growth
Osteoblast Bone Cells
break down bone matrix
Osteoclast
less active and maintain the matrix
Osteocyte
produce the bone matrix
Osteoblast
maintains bone. Less active Mature bone cell that maintains the bone matrix
Osteocyte Bone Cells
breaks down bone. Bone-reabsorbing cell
Osteoclast Bone Cells
organic collagen fibers
Osteoids
Hydroxylapatite & Osteoids are important for
function of bone
Hydroxylapatite give bone
its hardness
organic parts collagen fibers
Matrix Osteoid
calcium- phosphate salts give bone its hardness resist compression
Hydroxylapatite
Osteoid & Hydroxylapatite are important because?
Of Function of bone tention, tortion and compression
means pulling or stretching forces because of collagen fibers resist
Tension
bones are subject to these 3 types
torsion,tension & compression
means a twisting force bones are not as strong muscle pulls falling down bone breaks because of this
Torsion
means pushing or compact force bones are strong like jumping when you land
Compression
Bone breaks because of
torsional stress
Bone Tissue Components The organic portion helps
bone to resist stretching and twisting
Bone Tissue Components The inorganic portion
helps bone to resist compression
compact Bone organized in units called
osteons.
Spongy Bone Microscopy ??? are scattered throughout trabeculae, not arranged around osteons.
Osteocytes
Canaliculi are small canals that allow pathways for
diffusion of nutrients to the cells in the lacuna
Canaliculis is
a small canal
Spongy Bone Microscopy ??? travel through trabeculae
Canaliculi
outer layer Covered by periosteum or articular cartilage.
Compact bone
Compact bone is organized in units called
osteons also known as haversian systems
surrounding the central canal are layers of bone matrix called
Lamellae
an osteon is a cylindrical unit with a hollow passageway in the middle called
a central canal
in between the Lamellae there are small openings where cells live are called
lacune
Compact bone have
osteons
is the basic unit of structure of compact bone
An Osteon
???? and its concentrically arranged ????constituting the basic unit of structure in compact bone
a haversian canal & lamellae,
Canaliculi means
Narrow passageways that allow nutrients diffuse into the osteocytes lacuna
Canaliculi means
small canals
cells that maintain the bone matrix are called
osteocytes
in the Lacuna of an osteon the cells are called
osteocytes
are microscopic structures found in compact bone. They run within the osteons which are perpendicular to the Haversian canals, Perforating canals also carry small arteries throughout the bone
Volkmann’s canals
are short layers of bone matrix in-between the osteons
Interstitial Lamellae
long outside around the edge of matrix
Circumferential lamellae
have the same structure in the lamellae inside osteons
Interstitial Lamellae & Circumferential
Does not have osteons
Spongy bone (diploë)
Four classes of bone are
long, short, flat irregular bones
Bone Structure have red bone marrow
Short, Flat, & Irregular
Spongy bone thin branches of bony matrix found in the
ends of long bones
Canaliculi travel through the
trabeculae
Trabeculae are usually composed of
dense fibrous tissue, mainly of collagen
In the spongy bone between the Trabeculae
you have red bone marrow
long axis cylinder with large ends
long as they are wide
Long Bone
looks like a cube
filled with spongy bone
does not have a long axis
Short Bone
small sesame seeds that grow inside of tendons where there is pressure or stress the patella carpals of the hand
Sesamoid bone
Sesamoid bones are
a special type of short bone grow inside of tendons
People who do a lot of shooting, athletes, using the same motion over and over, dancers stress on toes get ?? bones
Who gets Sesamoid bones?
have thin layer of spongy bone in the middle
Flat Bone
sutures of the skull where the bones interlock special type of flat bone
Sutural (wormian)
What kind of nationality of people have a high incident of suture bones
Native Americans
doesn’t fit anywhere else
Irregular Bone
outer layer of compact bone and inner medullary cavity central portion
Dadiaphis
becomes thinner and has spongy bone through out
Epiphyses compact bone
Cavity inside the Dadiaphis is called
Medullary Cavity
Medullary Cavity is lined with
Endosteum
Cortex is
outer layer
Medullar is
inner layer Middle
Compact bone is also known as
Cortical bone
in Cortical bone middle is the
medullary cavity
where the long bone lengthens or grows from
Epiphyseal plate
growth plate when young it is made of cartilage
Epiphyseal line –
have articular cartilage around outside
Epiphysis
hyaline cartilage is called articular cartilage because
the Epiphysis articulate or join with other bones
outer covering on the outside of every bone you have the
periostem
runs parallel to the long axis of the bone and carries blood vessels, nerves and lymph vessels through the bony matrix
Central(haversian) canal
inner membrane lining around the inside of every bone
endosteum
what is lined with endosteuum?
Medullary Cavity
layer that is closer to the compact bone is called the
osteogenic
the outer layer is called
fibrous layer made of dense irregular tissue
osteoblast line the outside of?
COMPACT BONE
periosteum has 2 sub layers they are
fibrous and osteogenic
sharpeys fibers makes it so the
periostium stick to compact bone
osteogenic means
bone growing
bones joined by fibrous tissue
Fibrous joint
slightly movable joints
amphiarthroses
the irregular edges of the bones interlock and are united by very short connective tissue fibers
suture
the articulating ones are connected by short ligaments of dense fibrous tissue: the bones do not interlock
syndesmoses
a tooth is secured in a bony socket y the periodontal ligament
gomphosis
freely movable joints
diarthroses
lacunae arranged in concentric circles around the central cana
Circumferential lamellae
cavity are often pared
Medullar & Cortex
Membrane inside of bones inner lining
Endosteum
what membrane is outside of compact bone outer covering
Periosteum Membrane
What membrane has 2 sub layers
Periosteum Membranes
Periosteum Membrane has 2 sub layers In long bone structure there is the
membranes and bone marrow
Periosteum Fibrous layer is an
outer layer made of dense irregular of connective tissue
has lots of osteoblast closer to the compact bone means bone growing
Periosteum Osteogenic layer
what do osteoblast do
make the bone thicker
what is an osteoblast
bone germinator
osteogenic layer consist of
primarily of bone forming cells
Osteoclast ARE
bone destroying cells, bone breakers
osteogenic cells are
stem cells
what do Sharpeys fibers do?
stick to the compact bone
Yellow Bone Marrow in medullary cavity in adults is
made of adipose tissue
Red Bone Marrow medullary cavity in children make
blood cell formation
Short Flat and irregular bones are similar in structure but they don’t have
medullary cavitys full of spongy bone
lined by the endosteum
spongy bone
Spongy bone found on the inside is refereed to as
diploe
intramembranous happens with
bones of the skull
intramembranous means
bones grow inside of membranes
endochondral means
inside of cartliege
endochondral
all the rest of the bones
Bone Development Ossification (osteogenesis)is
formation of bone tissue
Bone Development Embryonic skeleton is composed of
flexible membranes and hyaline cartilage.
What begins about 8 weeks in utero.
Ossification
Intramembranous bone development bones grows
inside of membrane it Occurs in skull and clavicles
Endochondral bone development
bones grow in the rest of the body
1st Step of Intramembranous Ossification is cells cluster together to make
an ossification center appear making osteoblast
Step 2 Intramembranous Ossification - grow ...start making Bone matrix is grow making bone and
cells become osteocytes. dividing cells blast increase in number
step 3 of Intramembranous Ossification bones make Woven bone grow together and pcscp
make spongy bone & cells along edges form the periosteum
in step 4 of Intramembranous Ossification Lamellar bone replaces woven bone, just deep to the periosteum. Red marrow appears
...
bone grows inside the cartilage model
Endochondral Ossification
Endochondral also known as
intracartlagionus ossification
in a long bone you start off with a primary ossification center that will become???? then forming bone collar
the diayphsis
Endochondral Ossification: Step 1 you start off with a?? and bone collar is laid down around the diaphysis of
hyaline cartilage model
Endochondral Ossification: Step 2 Cartilage in the center of the diaphysis calcifies and develops cavities Cells within calcified area are cut off from nutrients and die. Cavity forms where cells died.
Ossification expands cells die
Endochondral Ossification: Step 5 The epiphyses ossify. When completed,it becomes? and articular cartilages can grow.
hyaline cartilage remains only in the epiphyseal plates
Long bones grow until your
20-25
Endochondral Ossification: Step 4 The diaphysis elongates and a medullary cavity forms at birth Diaphysis lengthens as bone tissue formation chases growth of hyaline cartilage. .
Diaphysis ossifies bone collar merges with bone matrix
Small bones finish growing
15-20 years old
The epiphyseal plate is really a joint between separate bones (the epiphysis and diaphysis). This is one reason why children have more bones than adults. Cartilage is weaker than bone and is more prone to breaking. Breakage can cause abnormal growth.
Long Bones in Childhood
Bone growth in childhood is mostly controlled by growth hormone.
Hyaline cartilage cells at epiphyseal plate continue to mitose, calcify, and erode. Process ceases when entire plate calcifies (15-25 years old).
growth in length of long bones occur at the .
epiphyseal plate
Hypertrophic zone .
Older cartilage cells enlarge.
Matrix becomes calcified; cartilage cells die; matrix begins deteriorating
Calcification zone
Resting zone is a place that cells not doing anything
chondrocytes
growth in length of a long bone occurs at the
epiphyseal plate
the major driver for bone growth in children is
growth hormone a hormone produced by the pituitary gland
what zone does cartilage undergo mitosis
Proliferation zone
what zone does older cartilage cells enlarge
Hypertrophic zone
what zone does matrix becomes calcified cartilage cell dies matrix begin deteriorating
Calcification zone
Hypertrophy is
abnormal large growth
what zone does new bone formation is occurring
Ossification zone
Bone Thickening ,grows around the edges is Also known as?
appositional growth.
In Childhood the major driver for bone growth is growth hormone, A hormone produced by the
pituitary gland
appositional growth causes bone to increase in diameter. Happens in long bones
Bone Thickening / appositional growth.
In bone thickening Osteoblasts deposit bone matrix under the periosteum
the periosteum
In bone thickening Osteoclasts remove bone matrix
under endosteum.
in appositional growth osteoBlast Deposit bone matrix
under the periostum
in appositional growth osteoClast Remove bone matrix
under endosteum
are living tissues
Bones
Bones are under constant construction. skeleton are completely replaced about every 10 years
Bone Remodeling
Two main drivers for bone remodeling are
Hormonal mechanism, Mechanical stress mechanism
Hormonal Mechanism Parathyroid hormone (PTH) Produced by the
parathyroid glands
blood calcium is between 9-11 mm
In homeostasis of calcium in the blood.
Parathyroid hormone Increases when
blood calcium is low
Parathyroid hormone Causes increased activity of
osteoclasts to resorb mineral matrix
in Hormonal Mechanism What is Produced by thyroid gland?
Calcitonin
Calcitonin has a weaker effect than
PARATHYROID HORMONES
Calcitonin Increases when
blood calcium is high.
Calcitonin Causes osteoblasts to generate more
mineral matrix
Calcitonin has a weaker effect than the
Parathyroid hormone
a hormone released by apidose tissue, decreases spongy bone but increases compact bone
Leptin,
bone grows or remodels in response to the demands placed on it. Bone are strongest where stress is greatest
Wolff’s law
Astronauts who are in space need regular exercise if they don’t exercise in space they can lose What?
because they are not walking around with gravity, gravity pulls on the body causing stress to be placed on bone and the bone Does what?.
bone density decreases,,,,, bones start to thin losing bone density
bones become fragile and prone to breakage
Osteoporoetic bone
Osteoporosis occurs in??? BECAUSE OSTEOBLAST INCREASES
postmenopausal women
bone resorption outpaces bone deposit
Osteoporosis
SEX HORMONES INCREASE
OSTEOBLAST ACTIVITY
estrogen decreases testosterone & estrogen increase osteoblast decrease
post-menopausal women
Bone Fractures Despite their ability to resist tension and compression, bones sometimes fracture. Classification of fractures:
Displaced/nondisplaced Complete/incomplete Compound/simple
What are the3 types of bone cells
osteo- clast,blast & cite
osteocyte
maintain
osteoblact
build bone
osteoclast
break it down/destroy bone
as an adult osteoblast & osteoclast
producing and depositing
IS a break in the bone
fracture
in non-displaced fractures the bone
retain normal position
displaced fractures the bone have
moved out of normal position alignment
if bone is broken through it is
a complete fracture
if bone doesn't break through
an incomplete fracture
bone penetrates the skin
open compound fracture
bone doesn't penetrate skin
closed compound simple fracture
ragged break occurs when twisting is applied to bone common sports enjury
spiral fracture
Bone breaks incompletely, much in the way a green twig breaks. Only one side of the shaft breaks, the other side bends.
greenstick
broken bone pressed inward common skull fracture
Depressed fracture
bone is crushed
compression fracture
epiphysis separates from the diaphysis along the epiphseal plate
epiphseal fracture
bone fragments into three or more pieces
comminuted fracture
in bone repair realigned of broken ends means
Reduction
in bone repair When ends are manually repositioned means
closed reduction
in bone repair When ends are secured surgically with hardware
open reduction
in bone repair When broken ends held in place occurs with a cast
immobilization
small breaks on small bones take
6-8 weeks to heal
First step in bone repair is
a hematoma forms
second step in bone repair is
soft fibrocalagionus callus forms
third step in bone repair is
bony callus forms
fourth step in bone repair is
bone remodeling occurs
tolerates repeated bending
ex. external ear and epiglottis
Elastic cartilage
Provides sturdy support with some resilience or "give"
Hyaline Cartilage
which cover the one ends at movable joints
Articular cartilage
bones of the limbs or appendages
Appendicular Skeleton
those one that lie around the body's center of gravity
Axial Skeleton
a thin area of hyaline cartilage that provides for longitudinal growth of the bone during youth
epiphyseal plate
thin bone covering the epiphyseal plate after the growth stops
epiphyseal line
Forms the long axis of the bone. it is constructed of a thick collar of compact bone that surrounds a central Medullary cavity or marrow cavity.
Diaphysis
are the bone ends.
Epiphyses
involve Parathyroid horamone (PTH) is released when blood level of ionic calcium decline.
Hormanal influences: Primary
Internal bone surface are covered with a delicate connective tissue mambrane
Endosteum (en-dos te um)
reduction in rate of bone formation.
Osteoporosis
Inflammation of bone and bone marrow caused by pus-forming bacteria that enter the body via a wound.
Osteomyelitis
A prominence or projection
Process
A hematoma forms
Fibrocartilaginous callus forms
bony callus forms
bone remodeling occurs
Fractures and healing process
A large somewhat blunt process
Trochanter
a nodule or small rounded process
Tubercle
A rounded prominence that articulates with another bone.
condyle
A groove
Sulcus
A sharp prominent bony ridge
Crest
a smooth nearly flat articular surface
Facet
A depression, often used as an articular surface
Fossa
A pit generally used for attachment rather than for articulation.
Fovea
A hole
Foramen
A canal
Meatus
the articulating bone ends are connected by a plate or pad of cartilage
cartilaginous joints
the bones are connected by a broad,flat disc of fibrocartilage
symphyses
the bony portions are united by hyaline cartilage
synchondroses
those in which the articulating bone ends are separated by a joint cavity containing synovial fluid
synovial joint
When it comes to movement and stability synarthrosis are
very stable
When it comes to movement and stability amphiarthrosis are
moderately stable
When it comes to movement and stability diarthrosis are
less stable
diarthrosis are what kind of joints
freelt movable
amphiarthrosis are what kind of joints
slightly movable
synarthrosis are what kind of joints
immovable
in structural classification fibrous joints are
bones attached by dense connective tissue
in structural classification cartilaginous joints are
bones held together by cartilage, bones attached by a pad or plate
in structural classification snyovial joints are
bones separated by a cavity converted by cartilage and attached by dense connective tissue
most complex structural joint
synovial joint
if you compare functional and structural classifications of joints fibrous joints are almost always
synarthrosis immovable
if you compare functional and structural classifications of joints cartilaginous are almost always
amphiarthrosis slightly movable
if you compare functional and structural classifications of joints synovial joints are always
diarthrosis freely movable
narrow opening
fissure
Raised area on or above a condyle
Epicondyle
Where 2 bones meet
Joint
Only moves in 1 direction e.g Elbow
Hinge joint
Slight movement
Gliding joint
Incases the synovial fluid
Synovial membrane
Lubricates joints
Synovial fluid
Connects bones to bones. Stretchy
Ligaments
Connects bones to muscles. Not stretchy
Tendons
Pair of muscles that work together to move bones at a joint.
Antagonistic pair
Get smaller
Contract
get larger
relax
Disease that makes the bones rub together.
Arthritis
Bones get brittle because of lack of calcium.
Osteoporosis
WHAT CHARACTERISTICS DO ALL JOINTS HAVE IN COMMON?
MOVEMENT
IN WHICH DIRECTION DOES THE SHOULDER USUALLY DISLOCATE?
DOWNWARD DISPLACEMENT OF THE HUMEROUS
BONES ARE FORCED OUT OF THEIR NORMAL POSITION IN THE JOINT CAVITY
DISLOCATION.
JOINTS BETWEEN PROXIMAL PHALANGES AND METACARPAL BONES
CONDYLOID
DESCRIBE THE TISSUE TYPE AND FUNCTION OF THE FOLLOWING STRUCTURES IN RELATION TO A SYNOVIAL JOINT:bursa
BURSA
Fibrous connective tissue; the bursa prevents friction within the joints
DESCRIBE THE TISSUE TYPE AND FUNCTION OF THE FOLLOWING STRUCTURES IN RELATION TO A SYNOVIAL JOINT:
SYNOVIAL MEMBRANE
SOFT CONNECTIVE TISSUE; The synovial membrane secretes synovial fluid which serves to lubricate the joint and reduce the friction between bones in joints
DESCRIBE THE TISSUE TYPE AND FUNCTION OF THE FOLLOWING STRUCTURES IN RELATION TO A SYNOVIAL JOINT:
ARTICULAR CARTILAGE
CONNECTIVE TISSUE; To cusion the bones from rubbing and smacking on each other. It also allows gliding motion.
CHARACTERIZED BY CARTILAGE CONNECTING THE BONY PORTIONS
CARTILAGINOUS
typically ALLOWS A SLIGHT DEGREE OF MOVEMENT
CARTILAGINOUS
requirements for healthy bone
physical stress
bone density increases with
repetitive stressors
in terms of bone health which is better swimming? or weightlifting?
weightlifting
repetitive stress can cause an increase in
bone density and strength
astronauts lose what in space
bone density
calcium is needed for what?
bone matrix
what is needed calcium absorption
Vit-D
Vit- A is needed for
bone cannot grow without
Osteoblast & Osteoclast functioning
Vit-C is needed for
bone is thin and brittle without
collagen synthesis
rickets is common in 3rd world countries and it is common in children that have
inadequate minerals bones become soft caused of lack of calcium
bone has a lot of
collagen fibers
growth hormone is produced by the
pituitary gland
pituitary gland stimulates
mitosis of cells in the cartilage
encourages replacement of cartilage with bone
thiroxin
when growth plates close
growing stops
promote formation of bone tissue like testosterone and estrogen
sex hormones gonads
regulate bone density based on blood calcium
parathyroid glands & Calcitonin
promote osteoblast activity increase so you lay down more bone matrix
sex hormones
when blood calcium levels get low it increases osteoclast activity bone matrix is reduces
PTH Parathyroid Hormone
is released when calcium blood levels are high causing osteoblast to increase activity
Calcitonin Thyroid gland
Thyroid gland is also named
CalcitoninThyroid gland
Movement away from the mid-line of the body
abduction
Movement towards the mid-line of the body
adduction
Bending the limbs at a joint.
flexion
A circular movement around a fixed point
rotation
Weakest part of the skeleton
Joints
Fancy name for joint is
articulation
Articulations are junction between
bone
Functional classification Synarthroses
immovable joints skull
Functional classification Amphiarthroses
slightly movable spine
Functional classification Diarthroses
freely movable fingers wrist sholders
Syndesmosis means
bones are connected by a ligament
The functional classification is based on
the amount of movement allowed
Cartilaginous joints are almost always
Amphiarthroses
Fibrous joints are almost always
synarthroses
Synovial joints are almost always
Diarthroses
Synchondroses hyaline cartilage common in the
epiphyseal plate Cartilaginous
Three types of fibrous joints are
Suture, Syndesmosis, Gomphosis
Symphyses articular/joint fibro cartilage grow together
Cartilaginous joints
Syndesmos is
ligament
is connected by lose connective tissue soft tissue
Synovial membrane
the articulating bone ends are connected by a plate or pad of cartilage
38
cartilaginous joints
bones joined by fibrous tissue
Fibrous joint
articular disc wedge or disc of fibrocartilage fits joint & stabilize reduce ware. inproves fit of a joint
Meniscus
Synovial fluid carries nutrients to
articular cartilage
Meniscus found in the
tmj scj acj distal ruj and knee
its an extension sits between soft tissue and bone extension of snoyvial membrane
Bursa sac of snoyvial fluid
modified bursa that wraps around tendon bun around hotdog protects the tendon from abrasion and ware
Tendon sheath
6 types of snyovila joints
plane, hinge pivot condyloid saddle ball and socket
Gliding flat or slightly curved carpal joints ankle joints
Plane joint
concave surface fits around convex movement of single plane elbow joint
Hinge joint
convex sits inside a
concave bone
cylindrical fits in ring twisting of axis c1/c2
Pivot joints
movement multiple planes radiocarpal joints
Condyloid ellispsoidal joint
are shape ligaments and muscles that cross affect the mobility of the joint
Factors that affect mobility
those in which the articulating bone ends are separated by a joint cavity containing synovial fluid
synovial joint
abduction of the spine left or right
lateral flexion
adduction of the spine
reduction
Run longitudinally through each muscle fiber
Surrounding by a sheath of sacoplasmic reticule (calcium ions)
Myofibrils
Myofilments are the contractile units that run through the myofibrils (actin,myosin)
what joint disease does a trex suffer from
gout
What tissue is is striated long cells and is voluntary
Skeletal tissue
What tissue is short has branched cells intercalated discs and is involuntary
Cardiac tissue
what tissue is thin tapered cells with no straiations and is involuntary
Smooth tissue
Excitability, Contractility, Extensibility and Elasticity are all Characteristics of what?
Muscle Tissue
In muscle tissue excitability means what?
the ability to respond to a stimulus
are you an ptmosist your an excitable
...
In muscle tissue contractility means what?
to contract and shorten unique to muscle
In muscle tissue extensibility means what?
pull beyond its normal resting. strechy
In muscle tissue elasticity means what?
snap back to resting position
Myo and Mys mean myofillment myofibral
epimysiom perimysom endomysiom
Muscle
MYS means
mouse
Sarco means
sacroplasm, sacrolemma, sacromear
Fleash
lemma means
husk
Muscle Fiber for skeletal/smooth muscle means
CELL
Movement ,Maintaning Posture, Stablizing Joints , Generating heat are what?
Majore Functions of Muscle
Cardiac and smoothe cause what kind of movement
internal Movement
Keeps bones in place is what major function of muscle
stablizing joints
Pulling muscles on bones is what major function of muscle
Movement
Cause compression of organs or the lungs cannot inflate if you done correctly use causing a disfunction this major function of muscle
Maintaing Posture
whole muscle is wrapped by
epimysium sheaths
each fascicle has its own connective tissue covering
perimysium sheaths
inside the perimysiun muscle fibers cells are wrapped by
endomysium sheaths
a whole muscle is an
organ
muscles contract or shiver with short rapid contraction is what major function of muscle
generatng heat
tendon what connects muscle to bone? and has what kind of tissue
Tendon dense regular tissue
Muscle attaches to
skeleton
if a tendon is connect muscle to bone its called an
indirect attachment
the differences between a tendon and an aponeurosis is
shape
tendon shape is like a
rope
is a point of attachment that dosnt move during contraction
origin attachment
is a point of attachment that does move during attachment
insertion attachment
insert during contractions insertions towords moves origions
...
the plasma membrane of a muscle cell gets a special name called the
sarcolemma
myfibriles cause the
contraction of muscle
sacroplasmmic reticulum main function
stores calcium ions
myoglobin store what
store oxygen
glycosomes is an inclusion that stores
glycogen
thin filaments attach directly
z disc
attach titen elastic filaments
myosin
is a chain of sarcomere attach end to end
a myfibril
sarsomere are the basic units within the
myofiber
I BANDS ARE WHAT IN COLOR
LIGHT
A BANDS ARE WHAT IN COLOR
DARKER
A BANDS ARE WHERE YOU HAVE THE
THICK MYOSIN FILLMENTS
MDURING CONTRACTION THE z DISCS MOVE
CLOSER TOGETHER
CONTRACTIONS OF MUSCLES IS DUE TO
SARCOMERES SHORTNING
ACTON SLIDE
ACROSS MYO FILLMENTS
MYOSIN ARE MADE UP OF
MYSON PROTINES
ACTON AND MYOCIN
BIND TOGETHER
is an actin-binding protein that regulates actin mechanics. It is important, among other things, for muscle contraction
TROPOMYOSIN
EVENTS AT NEUROMUSCULAR JUNCTION
SIGNAL TERMINAL,CA++ OPEN,MOVE IN,RELEASE ACH INTO CLEFT, ACH BIND TO RECEPTORS, PERMEABILITY CHANGES
THE CONNECTION BETWEEN NERVE CELLS AND MUSCLE CELLS IS CALLED A
NEUROMUSCULAR JUNCTION
SKELETAL MUSCLE IS
VOLUNTARY
IN REPOLARIZATION OUT AND BECOMES NEG INSIDE
...
TROPONIN
a complex of muscle proteins
I BANDS ARE WHERE YOU DONT HAVE
MYOSIN FILLMENTS
n muscle cells, the long coiled-coil tails of the individual myosin molecules join together, forming the thick filaments of the
sarcomere
O/I can flip depending on state of contractions of other muscles
O/I can flip depending on state of contractions of other muscles
the difference between origin and attachment
is the direction of movement that occurs
aponeurosis shape is
flat sheet
Muscles attaches to
tendons dense regular tissue
LEAK CHANNELS ALLOW MORE GOING OUT THAN NA IN
ALLOW MORE K GOING OUT THAN NA IN
MEMBRANE POTENTIAL REFEREES TO A DIFFERENCE IN CHARGE BETWEEN THE
INSIDE AND OUTSIDE OF A MEMBRANE
RESTING MEMBRANE POTENTIAL AT REST THERE IS A DIFFERENCE IN CONCENTRATION AND A DIFFERENCE IN MEMBRANE POTENTIAL SO ITS MORE
NEGATIVE INSIDE THE CELL
IN A RESTING MUSCLE CELL THE INSIDE OF THE CELL IS
NEGATIVE
AT REST ITS THE MEMBRANE POTENTIAL
-70mV
-k IS HIGHER INSIDE -Na IS HIGHER OUTSIDE
a change in a cell's membrane potential, making it
more positive, or less negative
highly ORGANIZED
MUSCLE TISSUE
housemaid's knee is an inflammation of the prepatellar bursa at the front of the knee It is marked by swelling at the knee, which can be tender to the touch but which does not restrict the knee's range of motion
Prepatellar bursitis