WCU PHYS 261 FINAL EXAM ACTUAL EXAM 2 LATEST VERSIONS A AND B EACH VERSION
CONTAINS 100 QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|AGRADE
The volume of blood pumped out of the heart from one ventricle during one contraction -
(ANSWER)Stroke Volume (SV)
The rapid depolarization phase of the action potentials of myocardial contractile cells is due to which
ion(s)? -(ANSWER)Na+ only
The volume of blood in the ventricle available to be pumped out of the heart during one contraction -
(ANSWER)End- diastolic volume (EDV)
The volume of blood left in the ventricle after it contracts -(ANSWER)End- systolic volume (ESV)
The volume of blood ejected from each ventricle during a contraction -(ANSWER)Stroke volume (SV)
What happens when calcium binds to troponin? -(ANSWER)Tropomyosin is pulled away from the
myosin-binding site on actin.
The driving force for blood flow is a(n) ________ gradient. -(ANSWER)pressure
Which would NOT cause an increase in blood pressure? -(ANSWER)a decrease in cardiac output
Match the name of the wave with the correlated event:
ventricular depolarization -(ANSWER)QRS complex
, WCU PHYS 261 FINAL EXAM ACTUAL EXAM 2 LATEST VERSIONS A AND B EACH VERSION
CONTAINS 100 QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|AGRADE
The function of transverse tubules is to -(ANSWER)rapidly conduct action potentials to the interior of the
muscle fiber.
Which is greater:
A) blood pressure when the peripheral vessels constrict
B) blood pressure when the peripheral vessels dilate -(ANSWER)A) blood pressure when the peripheral
vessels constrict
The P wave of an ECG corresponds to -(ANSWER)depolarization of the atria
The reflex that compliments a withdrawal reflex by making compensatory adjustments on the opposite
side of the body receiving the stimulus is the -(ANSWER)crossed extensor reflex
Your instructor announces a pop quiz. Which would you expect? -(ANSWER)Increased sympathetic
signaling and increased cardiac output
This protein is activated by the Ca2+-calmodulin complex to phosphorylate the myosin light chain
protein. -(ANSWER)myosin light chain kinase
In which situation would end- systolic volume (ESV) be the greatest? -(ANSWER)when parasympathetic
stimulation of the heart is increased
CONTAINS 100 QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|AGRADE
The volume of blood pumped out of the heart from one ventricle during one contraction -
(ANSWER)Stroke Volume (SV)
The rapid depolarization phase of the action potentials of myocardial contractile cells is due to which
ion(s)? -(ANSWER)Na+ only
The volume of blood in the ventricle available to be pumped out of the heart during one contraction -
(ANSWER)End- diastolic volume (EDV)
The volume of blood left in the ventricle after it contracts -(ANSWER)End- systolic volume (ESV)
The volume of blood ejected from each ventricle during a contraction -(ANSWER)Stroke volume (SV)
What happens when calcium binds to troponin? -(ANSWER)Tropomyosin is pulled away from the
myosin-binding site on actin.
The driving force for blood flow is a(n) ________ gradient. -(ANSWER)pressure
Which would NOT cause an increase in blood pressure? -(ANSWER)a decrease in cardiac output
Match the name of the wave with the correlated event:
ventricular depolarization -(ANSWER)QRS complex
, WCU PHYS 261 FINAL EXAM ACTUAL EXAM 2 LATEST VERSIONS A AND B EACH VERSION
CONTAINS 100 QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|AGRADE
The function of transverse tubules is to -(ANSWER)rapidly conduct action potentials to the interior of the
muscle fiber.
Which is greater:
A) blood pressure when the peripheral vessels constrict
B) blood pressure when the peripheral vessels dilate -(ANSWER)A) blood pressure when the peripheral
vessels constrict
The P wave of an ECG corresponds to -(ANSWER)depolarization of the atria
The reflex that compliments a withdrawal reflex by making compensatory adjustments on the opposite
side of the body receiving the stimulus is the -(ANSWER)crossed extensor reflex
Your instructor announces a pop quiz. Which would you expect? -(ANSWER)Increased sympathetic
signaling and increased cardiac output
This protein is activated by the Ca2+-calmodulin complex to phosphorylate the myosin light chain
protein. -(ANSWER)myosin light chain kinase
In which situation would end- systolic volume (ESV) be the greatest? -(ANSWER)when parasympathetic
stimulation of the heart is increased
