What id the function of the Epithelial tissue

cover/line

What are the common characteristics of all epithelial tissue

avascular, regeneration, supported by connective tissue, made of mostly cells

Name the different types of Epithelial tissue

Simple, Stratified, Glandular

What are the subcategories of simple epithelial tissue

simple squamos, cuboidal, columnar, pseudostratified

Describe simple squamos

flat cells, diffusion, lungs

Describe simple cuboidal

cube-like cells, secrete and absorb, kidney tubules

Describe simple columanr

secrete absorb, digestive

Describe pseudostratified

secrete(mucus), trachea

Startified Squamos

protection, outside of skin, lining of mouth

Function of connective tissue

supports, insulates, transports, protects

subcatagories of connective tissue

proper (loose, dense) cartilage, bone, blood

loose connective tissue

areolar, adipose, reticular

areolar

wraps/cushions organs

adipose

provides reserve food feul. Under skin

reticular

forms soft skeleton. Spleen

dense connective tissue

dense reg, dense irreg, elastic

dense reg connective tissue

attaches muscle to bone. ligaments and tendons

dense irreg connective tissue

withstands tension. Capsule surrounding joint

elastic

allows recoil after stretching. Arteries, aorta, heart

Kinds of cartilage

hyaline, elastic, fibrocartilage

hyaline cartilage

supports/ reinforces. covers end of long bones

elastic cartilage

maintains shape and structure. ear

fibrocartilage

absorbs shock. intervertebral discs

bone

supports/protects

blood

transports. blood vessels

types of muscle tissue

skeletal, cardiac, smooth

skeletal muscle

voluntary

cardiac muscle

propels blood. walls of heart

smooth muscle

propels objects through passageways. hollow organs

nerve tissue

conducts and controls. transmits signals. brain and spinal cord

types of tissue repair

regeneration, fibrosis

regeneration

same kind of tissue replaces destroyed tissue

fibrosis

connective tissue replaces destroyed tisue (scar tissue)

steps of tissue repair

1. inflammation
2. building new tissue/ organization restores blood supply
3. regeneration and fibrosis

what regenerates well, moderate, and what has no regenerative capacity

well: epithelial tissues, areolar conn tissue, dense irreg conn tissue, blood-forming tissue
Moderate: smooth muscle and dense reg conn tissue
none: cardiac muscle, nervous tissue of brain and spinal cord

polarity of epithelial

exhibit apical-basal polarity

apical surface

(upper free) exposed to exterior or cavity. May be smooth and slick. Most have microvilli. some have cilia

basal surface

(lower, attached) scaffolding for cell migration in wound repair. glycoprotein and collagen fibers lie adjacent

GLANDS

STRUCTURE ELEMENTS OF CONNECTIVE TISSUE