1|Page
WCU PHYS 261 FINAL EXAM-with 100% verified
solutions 2025-tutor verified
The volume of blood pumped out of the heart from one ventricle during one
contraction - (answers)Stroke Volume (SV)
The rapid depolarization phase of the action potentials of myocardial contractile
cells is due to which ion(s)? - (answers)Na+ only
The volume of blood in the ventricle available to be pumped out of the heart
during one contraction - (answers)End- diastolic volume (EDV)
The volume of blood left in the ventricle after it contracts - (answers)End- systolic
volume (ESV)
The volume of blood ejected from each ventricle during a contraction -
(answers)Stroke volume (SV)
What happens when calcium binds to troponin? - (answers)Tropomyosin is pulled
away from the myosin-binding site on actin.
The driving force for blood flow is a(n) ________ gradient. - (answers)pressure
Which would NOT cause an increase in blood pressure? - (answers)a decrease in
cardiac output
, 2|Page
Match the name of the wave with the correlated event:
ventricular depolarization - (answers)QRS complex
The function of transverse tubules is to - (answers)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 - (answers)A) blood pressure
when the peripheral vessels constrict
The P wave of an ECG corresponds to - (answers)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 -
(answers)crossed extensor reflex
Your instructor announces a pop quiz. Which would you expect? -
(answers)Increased sympathetic signaling and increased cardiac output
This protein is activated by the Ca2+-calmodulin complex to phosphorylate the
myosin light chain protein. - (answers)myosin light chain kinase
WCU PHYS 261 FINAL EXAM-with 100% verified
solutions 2025-tutor verified
The volume of blood pumped out of the heart from one ventricle during one
contraction - (answers)Stroke Volume (SV)
The rapid depolarization phase of the action potentials of myocardial contractile
cells is due to which ion(s)? - (answers)Na+ only
The volume of blood in the ventricle available to be pumped out of the heart
during one contraction - (answers)End- diastolic volume (EDV)
The volume of blood left in the ventricle after it contracts - (answers)End- systolic
volume (ESV)
The volume of blood ejected from each ventricle during a contraction -
(answers)Stroke volume (SV)
What happens when calcium binds to troponin? - (answers)Tropomyosin is pulled
away from the myosin-binding site on actin.
The driving force for blood flow is a(n) ________ gradient. - (answers)pressure
Which would NOT cause an increase in blood pressure? - (answers)a decrease in
cardiac output
, 2|Page
Match the name of the wave with the correlated event:
ventricular depolarization - (answers)QRS complex
The function of transverse tubules is to - (answers)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 - (answers)A) blood pressure
when the peripheral vessels constrict
The P wave of an ECG corresponds to - (answers)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 -
(answers)crossed extensor reflex
Your instructor announces a pop quiz. Which would you expect? -
(answers)Increased sympathetic signaling and increased cardiac output
This protein is activated by the Ca2+-calmodulin complex to phosphorylate the
myosin light chain protein. - (answers)myosin light chain kinase
