composed of similarly specialized cells that perform the same function in the body

Tissue

Four types of tissue

Epethial
Connective
Muscular
Nervous

Tissue that lines the body surfaces and cavities

Epithelial

Tissue that supports and bonds body parts

Connective

Tissue that moves the body and its parts

Muscular

tissue that recieves stimuli and conducts impulse

Nervous

Outer cells are falttened

Squamous

Outer cells are cubed shaped

Cuboidal

OUter cells are rectangular

COlumnar

Single layer of cells

Epithelial Tissue Single

Multiple cell layers

Epithelial Tissue Stratified

Appears to be multilayered but is actually only one layer

Epithelial Tissue Pseudostratified

secrete their products into a duct

Exocrine glands

secrete their products directly into the bloodstream

Endocrine glands

composed of closely packed tough fibers and is found in structures such as tendons and ligaments

Dense fibrous connective tissue

fat is used for energy and insulation

Adipose tissue

provides flexible support

Cartilage

strong support and protection

Bone

transports nutrients and wastes
helps protect us from disease

Blood

Voluntary

Skeletal Muscle

occurs in blood bessels and walls of the digestive tract
is involuntary

Smooth Muscle

Pumps the blood

Cardiac Muscle

Support and nourish neurons

Neuroglia

conduct nerve impulses

Neurons

take input into cell body

Dendrites

Integrates information

Cell body

take output away from cell body

Axon

Anterior and above diaphragm
Consist of Lungs and Heart

Thoracic cavity

anterior and below diaphragm
consists of spleen and most he digestive organs

Abdominal Cavity

anterior and near the hips
Contains urinary bladder and reproductive organs

Pelvic cavity

More posterior
Consists of brain and spinal cord

Dorsal cavity

-Protects the underlying tissues from trauma,pathogen invasion, and water loss
-helps to regulate body temperature by sweating
-Synthesizes Vitamin D
-Helps us to be aware of our surroundings

Functions of the Skin ( Integumentary System)

Outer layer

Epidermis

Inner layer

Dermis

The maintenance of relatively constant internal conditions in an organism

Homeostasis

senses the condtion, responds to counteract the current condition and returns values to normal levels

Negative feedback

sense the condition, responds to increase the current condtion

Positive feedback