WCU PHYS 261 Final Exam Review Questions
and Answers (100% Correct Answers) Already
Graded A+
The volume of blood pumped out of the heart from one
ventricle during one contraction [ Ans: ] Stroke Volume
(SV)
The rapid depolarization phase of the action potentials of
myocardial contractile cells is due to which ion(s)? [ Ans: ]
Na+ only
The volume of blood in the ventricle available to be
pumped out of the heart during one contraction [ Ans: ]
End- diastolic volume (EDV)
The volume of blood left in the ventricle after it contracts
[ Ans: ] End- systolic volume (ESV)
The volume of blood ejected from each ventricle during a
contraction [ Ans: ] Stroke volume (SV)
What happens when calcium binds to troponin? [ Ans: ]
Tropomyosin is pulled away from the myosin-binding site
on actin.
The driving force for blood flow is a(n) ________ gradient. [
Ans: ] pressure
Which would NOT cause an increase in blood pressure? [
Ans: ] a decrease in cardiac output
, Match the name of the wave with the correlated event:
ventricular depolarization [ Ans: ] QRS complex
The function of transverse tubules is to [ Ans: ] 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 [ Ans:
] A) blood pressure when the peripheral vessels constrict
The P wave of an ECG corresponds to [ Ans: ]
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 [ Ans: ] crossed
extensor reflex
Your instructor announces a pop quiz. Which would you
expect? [ Ans: ] Increased sympathetic signaling and
increased cardiac output
This protein is activated by the Ca2+-calmodulin complex
to phosphorylate the myosin light chain protein. [ Ans: ]
myosin light chain kinase
and Answers (100% Correct Answers) Already
Graded A+
The volume of blood pumped out of the heart from one
ventricle during one contraction [ Ans: ] Stroke Volume
(SV)
The rapid depolarization phase of the action potentials of
myocardial contractile cells is due to which ion(s)? [ Ans: ]
Na+ only
The volume of blood in the ventricle available to be
pumped out of the heart during one contraction [ Ans: ]
End- diastolic volume (EDV)
The volume of blood left in the ventricle after it contracts
[ Ans: ] End- systolic volume (ESV)
The volume of blood ejected from each ventricle during a
contraction [ Ans: ] Stroke volume (SV)
What happens when calcium binds to troponin? [ Ans: ]
Tropomyosin is pulled away from the myosin-binding site
on actin.
The driving force for blood flow is a(n) ________ gradient. [
Ans: ] pressure
Which would NOT cause an increase in blood pressure? [
Ans: ] a decrease in cardiac output
, Match the name of the wave with the correlated event:
ventricular depolarization [ Ans: ] QRS complex
The function of transverse tubules is to [ Ans: ] 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 [ Ans:
] A) blood pressure when the peripheral vessels constrict
The P wave of an ECG corresponds to [ Ans: ]
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 [ Ans: ] crossed
extensor reflex
Your instructor announces a pop quiz. Which would you
expect? [ Ans: ] Increased sympathetic signaling and
increased cardiac output
This protein is activated by the Ca2+-calmodulin complex
to phosphorylate the myosin light chain protein. [ Ans: ]
myosin light chain kinase
