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BIOL 320 EXAM 2 NEWEST 2025 ACTUAL EXAM 2025/2026
NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND
VERIFIED ANSWERS |ALREADY GRADED A+|
What are three ways that venous blood is pumped back to heart?
- ANSWER-respiratory pump, muscular pump, valves
How is mean arterial pressure maintained? - ANSWER-
vasoconstriction and vasodilation
Where are chemoreceptors located? - ANSWER-aorta and carotid
artery
What stimulates the chemoreceptors to function? - ANSWER-low
oxygen, high carbon dioxide
When is the renin-angiotensin mechanism active? - ANSWER-
when BP is low
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What does the renin-angiotensin mechanism do? - ANSWER-
causes resorption of Na+
What do beta blockers do? - ANSWER-dilate blood vessels
What are two types of high blood pressure medication? -
ANSWER-beta blockers, diuretics
What is angiogenesis? - ANSWER-formation of new blood
vessels due to high altitude or occluded coronary vessel
How does flow relate in skeletal muscles? - ANSWER-blood flow
increased directly with tissue activity
What controls skeletal muscle blood flow? - ANSWER-local
controls override systemic controls
When do precapillary sphincters constrict? - ANSWER-oxygen,
nutrients and pH increase
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When do precapillary sphincters relax? - ANSWER-metabolic
byproducts and carbon dioxide increase
What occurs in cerebral vessels due to decreases in mean arterial
pressure? - ANSWER-vessels vasodilate
What occurs in cerebral vessels due to increases in mean arterial
pressure? - ANSWER-vessels vasoconstrict
Why do cerebral vessels react the opposite way to mean arterial
pressure? - ANSWER-constriction protects fragile cerebral
capillaries form a blow up
What region of the adrenal gland releases aldosterone? -
ANSWER-zona glomerulosa
What is the indirect renal mechanism? - ANSWER-hormonal
What is atherosclerosis? - ANSWER-cholesterol/lipid on vessel
wall increases resistance resulting in blocked flow
BIOL 320 EXAM 2 NEWEST 2025 ACTUAL EXAM 2025/2026
NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND
VERIFIED ANSWERS |ALREADY GRADED A+|
What are three ways that venous blood is pumped back to heart?
- ANSWER-respiratory pump, muscular pump, valves
How is mean arterial pressure maintained? - ANSWER-
vasoconstriction and vasodilation
Where are chemoreceptors located? - ANSWER-aorta and carotid
artery
What stimulates the chemoreceptors to function? - ANSWER-low
oxygen, high carbon dioxide
When is the renin-angiotensin mechanism active? - ANSWER-
when BP is low
, Page |2
What does the renin-angiotensin mechanism do? - ANSWER-
causes resorption of Na+
What do beta blockers do? - ANSWER-dilate blood vessels
What are two types of high blood pressure medication? -
ANSWER-beta blockers, diuretics
What is angiogenesis? - ANSWER-formation of new blood
vessels due to high altitude or occluded coronary vessel
How does flow relate in skeletal muscles? - ANSWER-blood flow
increased directly with tissue activity
What controls skeletal muscle blood flow? - ANSWER-local
controls override systemic controls
When do precapillary sphincters constrict? - ANSWER-oxygen,
nutrients and pH increase
, Page |3
When do precapillary sphincters relax? - ANSWER-metabolic
byproducts and carbon dioxide increase
What occurs in cerebral vessels due to decreases in mean arterial
pressure? - ANSWER-vessels vasodilate
What occurs in cerebral vessels due to increases in mean arterial
pressure? - ANSWER-vessels vasoconstrict
Why do cerebral vessels react the opposite way to mean arterial
pressure? - ANSWER-constriction protects fragile cerebral
capillaries form a blow up
What region of the adrenal gland releases aldosterone? -
ANSWER-zona glomerulosa
What is the indirect renal mechanism? - ANSWER-hormonal
What is atherosclerosis? - ANSWER-cholesterol/lipid on vessel
wall increases resistance resulting in blocked flow
