What does a nucleus contain?
What is the characteristics of the nucleus? (4)


What are inclusions?


What is the mitochondria?


What are the different types of cell junctions?


What are desmosomes?(3)

-released and reattached between neighboring cells
-uses tonofibrils (don't cross into other cell but loops back)
-attachment plaques

What are hemidesmosomes?(2)

-Cellular to noncellular surface
-epith cell to basal lamina of basement membrane or JE to tooth

How do epithelial cells attach to one another?
Where do epithelial cells get their nourishment from?

-do NOT contain blood vessels
-get nourishment from vessels in underlying CT

What is the difference between tight junctions and gap junctions?


Difference between desmosomes (3)and hemidesmosomes(3) in epithelial tissue?

-button like adhesion disk (snap or velcro)
-cell to cell connection
-found in gingival epithelium
-half desmosome
-cell to basal lamina connection (non cellular)
-found in gingival epithelium or JE

What is intercellular substance? (4)

-(glue) holds cells together
-exchange of nutrients and waste between cells
-amount and kind varies; some tissues have both types
-produced by cells

What are the two type of IS?
What is a common substance in IS?

-formed elements
-4 types of fibers
Amorphous (g.s)
-no shape
-hyaluronic acid

What are the characteristics of tissue fluid? (4)

medium of exchange
-most derived from plasma
-carries waste and nutrients between blood cells and blood vessels and or IS
-varies in amount according to type of tissue

What are the primary germ layers?


Where is the ectoderm found? (5)

-lining of oral and nasal cavity
-salivary glannds

Where is mesoderm found?(4)

-blood (connective tissues)
-some internal organs

What are the different types of tissues?
What is the only organ that has all 4?


What is muscle tissue composed of? what are the characteristics of muscle? (3)


What is nerve tissue composed of?

-function is to transmit impulses

What are the two different types of nerve endings?

-mostly in pulp and oral epithelium
-in connective tissue and periodontal ligament (also contains some free endings)

What are the characteristics of epithelial tissues? (2)


What are the functions of epithelial tissues? (4)

-protective-covers outer sufaces
-resorption-digestion, lines inner surfaces
-secretion-lubricate, transport, reception of stimuli (taste cells), glands

What supplys the blood to the gingiva?