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BIO 669 EXAM 2 AND STUDYGUIDE LATEST
2026/2027 ACTUAL EXAM WITH COMPLETE VERIFIED
QUESTIONS AND CORRECT DETAILED ANSWERS
(100% VERIFIED ANSWERS) |ALREADY GRADED A+|
|SURE PASS!!!
Which of the following is NOT a risk factor for varicose
veins?
A. Age > 40 yrs
B. High estrogen levels (pregnancy or BCP)
C. Obesity
D. Prior injury in the vein/leg
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E. All of the above are risk factors for varicose veins -
ANSWER-E. All of the above are risk factors for varicose
veins
The cells of the cardiac conduction system (SA node, AV
node, Purkinje fibers) have a unique property that allows a
steady leakage toward depolarization during the diastolic
phase of the cardiac cycle. This property is called:
A. Automaticity
B. Excitability
C. Refractory periods
D. Preload - ANSWER-A. Automaticity
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Arterial chemoreceptors within the aortic arch and carotid
arteries:
A. Increase heart rate, stroke volume and blood pressure
in response to decreased oxygen or increased CO2 levels
B. Will stimulate vascular smooth muscle constriction in
response to low oxygen levels
C. Detects oxygen, but not CO2 or hydrogen ion levels in
the plasma
D. Triggers the release of insulin when hyperglycemia is
detected - ANSWER-A. Increase heart rate, stroke volume
and blood pressure in response to decreased oxygen or
increased CO2 levels
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The portion of troponin that binds the troponin complex to
actin and is released into the plasma during cardiac cell
damage (and is a useful indicator of an acute MI) is
troponin:
A. I
B. M
C. C
D. T - ANSWER-D. "T"
As a wave of action potentials travel from the atria into the
ventricles, it is momentarily delayed by about 0.1 seconds
as a result of slow conduction through the:
A. SA node
BIO 669 EXAM 2 AND STUDYGUIDE LATEST
2026/2027 ACTUAL EXAM WITH COMPLETE VERIFIED
QUESTIONS AND CORRECT DETAILED ANSWERS
(100% VERIFIED ANSWERS) |ALREADY GRADED A+|
|SURE PASS!!!
Which of the following is NOT a risk factor for varicose
veins?
A. Age > 40 yrs
B. High estrogen levels (pregnancy or BCP)
C. Obesity
D. Prior injury in the vein/leg
,2|Page
E. All of the above are risk factors for varicose veins -
ANSWER-E. All of the above are risk factors for varicose
veins
The cells of the cardiac conduction system (SA node, AV
node, Purkinje fibers) have a unique property that allows a
steady leakage toward depolarization during the diastolic
phase of the cardiac cycle. This property is called:
A. Automaticity
B. Excitability
C. Refractory periods
D. Preload - ANSWER-A. Automaticity
,3|Page
Arterial chemoreceptors within the aortic arch and carotid
arteries:
A. Increase heart rate, stroke volume and blood pressure
in response to decreased oxygen or increased CO2 levels
B. Will stimulate vascular smooth muscle constriction in
response to low oxygen levels
C. Detects oxygen, but not CO2 or hydrogen ion levels in
the plasma
D. Triggers the release of insulin when hyperglycemia is
detected - ANSWER-A. Increase heart rate, stroke volume
and blood pressure in response to decreased oxygen or
increased CO2 levels
, 4|Page
The portion of troponin that binds the troponin complex to
actin and is released into the plasma during cardiac cell
damage (and is a useful indicator of an acute MI) is
troponin:
A. I
B. M
C. C
D. T - ANSWER-D. "T"
As a wave of action potentials travel from the atria into the
ventricles, it is momentarily delayed by about 0.1 seconds
as a result of slow conduction through the:
A. SA node
