PHGY 215 – midterm Exam 2026 Questions and Answers

PHGY 215 – midterm Exam 2026
Questions and Answers

3 controls of homeostasis - Correct answer-sensory - sense environmental variable

integrator - compare to set point

effector - initiate change to go back to set point

2 regulations of homeostasis - Correct answer-intrinsic - inside of tissue

extrinsic - outside of tissue

2 feedbacks of homeostasis - Correct answer-negative - initate response in opposite

direction to go back to set point

positive - amplify signal

categorize blood clot, blood pressure, childbirth, body temperature - Correct

answer-blood clot - positive/intrinsic

blood pressure - negative/intrinsic

childbirth- positive/extrinsic

body temperature - negative/extrinsic
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, functions of:

carbohydrate chains

membrane proteins

phospholipid

ion channels

cholesterol - Correct answer-carbohydrate chains - receptor

membrane proteins - cell structure/function

phospholipid - lipid bilayer head

ion channels - permit entry/exit of ions

cholesterol - tuck between cells (fatty)

3 cell adhesions - Correct answer-CAM - cell adhesion molecules

ECM - extracellular matrix

cell junctions

CAM - Correct answer-- transmembrane proteins

ECM - Correct answer-- fibrous tissue that allows for diffusion

3 components of ECM - Correct answer-1. elastin - allows for stretch


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