Similar cells grouped together to perform a common function

Muscle

Epithelia

Nervous

Connective

Specialized for contraction---> enables movement of skeleton or internal organs

skeletal

cardiac

smooth

-generally attaches to bones

 -causes movement of skeleton

-striated (striped)

-multinucleated (formed from union of separate cells during development)

-voluntary (conscious control)

-heart muscle

-striated

-1 nucleus/cell

-contract as one unit

-involuntary

-movement within internal organs such as digestive tract, bladder, arteries, etc

-no striation

-1 nucleus/cell

-involuntary

-Composed of cells that generate & conduct electrical impulses and supporting cells-->fast coordination

(nerve cells): conduct electrical impulses and transmit chemical signals between themselves andeffectors (are muscles or glands)

Central Nervous System

(CNS)

oligodendrocytes (insulation),

microglia (defense),

astrocytes (support/nutrition)

Peripheral Nervous System

(PNS)

Schwann cells and satellite cells

Sheets of tightly packed cells (membranes) & glands

covering and lining outside of the body (generally except in digestive tract) 

protective covering, absorption, secretion, etc.

Squamos

(flat, e.g.epidermis)

cuboidal

(square, e.g. salivary ducts)

columnar

(tall and thin, e.g. lining of digestive & resp. tracts)

  -have ducts

  -secrete chemicals outside of body or into digestive tract

-e.g. sweat glands, majority of pancreas, etc

no ducts

-secrete chemicals (HORMONES) into blood

  e.g. dopamine, adrenaline, epinephrine

-e.g. adrenal gland, certain cells of pancreas

Sparse scattering of cells in an extracellular matrix;

Functions:

a.) structural support and binding of other tissues

  b.) defense against foreign particles or organisms

  c.) diffusion of nutrients from blood vessels to other cells

* connective tissue proper          

* bone

* cartilage    

* blood

Tendons- muscle--> bone

Ligaments- bone-->bone

Adipose- fate tissues

Dermis- pink, shiny stuff below

             epidermis

transport materials (nutrients, oxygen, wastes) around body & immunity

structure, protection, aid in movement

dynamic internal constancy

Organ systems help maintain homeostasis

 homeostatic equilibrium because the response reduces stimulus (stress)

• Examples:

– Regulation of blood

    glucose

– Regulation of body

   temperature

– Pretty much the

majority of physiologic

mechanisms