Anatomy Test 2- BIOL 2220 Clemson
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Tissues are classified by - ✔✔number of layers
simple layers - ✔✔single layer
stratified layers - ✔✔more than one layer
pseudostratified layers - ✔✔one layer (looks like more)
simple function - ✔✔absorption and filtration
stratified function - ✔✔protection
simple epithelium found - ✔✔areas without much friction
stratified epithelium found - ✔✔areas with high abrasion
Pseudostratified epithelium found - ✔✔areas with little movement
Different shapes of epithelium - ✔✔squamos, cuboidal, columnar, transitional
squamos epithelium is (shape) - ✔✔flat
cuboidal epithelium is (shape) - ✔✔cube, same width and length
columnar epithelium is (shape) - ✔✔column, longer than wide
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transitional epithelium is (shape) - ✔✔dome cells on apical surface , can change shape (stretch), found in
hollow storage organs
Functions of Epithelium - ✔✔1. establish boundaries
2. protection
3. absorption
4. filtration
5. excretion
6. secretion
7. sensory reception
2 groupings of epithelial tissue - ✔✔1. covering and lining
2. glandular
covering and lining epithelium found - ✔✔on all free body surfaces, exposed to the exterior.. ex. lining
the digestive and respiratory tract
apical layer - ✔✔exposed to air, free surface
basal layer - ✔✔attached surface, usually attached to an underlying CT
surface meaning - ✔✔simple/single cells
layers meaning - ✔✔stratified cells
basement membrane composed of two parts: - ✔✔basal lamina and reticular lamina
where is the basement membrane located? - ✔✔basal surface of epithelial tissue
basal lamina - ✔✔noncellular sheet of glycoproteins, anchors basal layer to connective tissue
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reticular lamina - ✔✔collection of collagen fibers, adds strength and integrity to the basement membrane
What connects epithelial and connective tissue? - ✔✔basal layer - glycoproteins and collagen
Does epithelial or connective tissue have blood vessels? - ✔✔connective tissue
Are epithelial cells vascular or avascular? - ✔✔avascular (no blood vessels)
Where is covering and lining epithelial tissue located? - ✔✔all free body surfaces (mouth to anus)
glandular epithelium - ✔✔secretory part of a gland, secretes things
gland definition - ✔✔cell or group of cells of specialized epithelium that secrete substances into ducts,
onto surfaces, or into the blood
ducts - ✔✔tubules that direct to a specific place
are glands unicellular or multicellular? - ✔✔both
A gland requires this to produce its mostly watery secretory product - ✔✔energy
Exocrine glands secrete into - ✔✔ducts
Most exocrine glands are associated with - ✔✔digestion
Endocrine glands secrete into - ✔✔not ducts (ductless)
Endocrine glands secrete - ✔✔hormones
What type of gland does the pancreas have? - ✔✔both Endocrine and Exocrine glands
Structural Classification of glands - ✔✔Unicellular and Multicellular
Unicellular glands are also called - ✔✔goblet cells
goblet cell - ✔✔unicellular exocrine gland that produces mucus
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