Bio 161 Psu exam 1Questions and Answers 2026/2027 |Already Graded A+| Verified and Updated

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Bio 161 Psu exam 1Questions and Answers 2026/2027 |Already Graded A+| Verified and Updated

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Bio 161 Psu exam 1Questions and Answers 2026/2027 |Already Graded A+| Verified and Updated

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Bio 161 Psu exam 1Questions and
Answers 2026/2027 |Already Graded
A+| Verified and Updated

epithelial tissue - CORRECT ANSWER -acts as an interface between our other
tissue and the outside environment or internal cavities

simple tissue - CORRECT ANSWER -single layer of cells

stratified tissue - CORRECT ANSWER -multiple layers of cells

Shapes of epithelial cells - CORRECT ANSWER -squamous, cuboidal, columnar

epithelial function: protection - CORRECT ANSWER -prevents abrasion,
dehydration, and destruction from chemical and biological agents

, epithelial function: control absorption and secretion - CORRECT ANSWER -any
substance entering or leaving the body must cross the epithelium, some are
relatively impermeable, others are easily crossed

epithelial function: location for some sensation - CORRECT ANSWER -sensory
nerves in epithelial tissue are sensitive to stimuli

epithelial function: specialized glandular secretions - CORRECT ANSWER --physical
protection if discharged onto epithelial surfaces (cooling, acidic mantle)
-chemical messengers if secreted into the blood stream or interstitial fluid

4 characteristics of epithelial tissue - CORRECT ANSWER --polarity: apical and
basal
-attachment: to each other and to a basement membrane
---built to withstand chemical stress
-avascularity: must obtain nutrients by diffusion
-regeneration: life span 2-6 days, regeneration by stem cells

exocrine glands - CORRECT ANSWER -secrete chemical substances into ducts that
lead either to other organs or out of the body

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