PHYS 261 FINAL EXAM QUESTIONS RECENTLY
REVIEWED AND VERIFIED WITH THE CORRECT
DETAILED ANSWERS.GRADE A+ GURANTEED
D. stroke volume (SV) - answer ✔✔-Match each term with its definition.
A. cardiac output (CO)
B. heart rate (HR)
C. end-diastolic volume (EDV)
D. stroke volume (SV)
E. end-systolic volume
(ESV)the volume of blood pumped out of the heart from one ventricle during one contraction
Na+ only - answer ✔✔-The rapid depolarization phase of the action potentials of myocardial contractile
cells is due to which ion(s)?
Ca2+ only
K+ only
Na+ only
both Ca2+ and K+
both Na+ and K+
c. end-diastolic volume (EDV) - answer ✔✔-Match each term with its definition.
,A. cardiac output (CO)
B. heart rate (HR)
C. end-diastolic volume (EDV)
D. stroke volume (SV)
E. end-systolic volume (ESV)
the volume of blood in the ventricle available to be pumped out of the heart during one contraction
E. end-systolic volume (ESV) - answer ✔✔-Match each term with its definition.
A. cardiac output (CO)
B. heart rate (HR)
C. end-diastolic volume (EDV)
D. stroke volume (SV)
E. end-systolic volume (ESV)
the volume of blood left in the ventricle after it contracts
stroke volume. - answer ✔✔-The volume of blood ejected from each ventricle during a contraction is
called the
end-diastolic volume.
stroke volume.
cardiac reserve.
cardiac output.
end-systolic volume.
Tropomyosin is pulled away from the myosin-binding site on actin. - answer ✔✔-What happens when
calcium binds troponin?
, Troponin binds to actin and causes sarcomere shortening.
Troponin changes shape and covers the SR calcium channel, which is a form of negative feedback.
Tropomyosin is pulled away from the myosin-binding site on actin.
Troponin releases myosin and activates actin.
pressure - answer ✔✔-The driving force for blood flow is a(n) ________ gradient.
gravity
pressure
osmotic
volume
a decrease in cardiac output - answer ✔✔-Which would NOT cause an increase in blood pressure?
an increase in arterial resistance
a decrease in cardiac output
a decrease in arterial diameter
an increase in sympathetic activity
B. QRS complex - answer ✔✔-Match the name of the wave with the correlated event.
A. P wave
B. QRS complex
C. T wave
D. PR segment
E. ST segment
ventricular depolarization
REVIEWED AND VERIFIED WITH THE CORRECT
DETAILED ANSWERS.GRADE A+ GURANTEED
D. stroke volume (SV) - answer ✔✔-Match each term with its definition.
A. cardiac output (CO)
B. heart rate (HR)
C. end-diastolic volume (EDV)
D. stroke volume (SV)
E. end-systolic volume
(ESV)the volume of blood pumped out of the heart from one ventricle during one contraction
Na+ only - answer ✔✔-The rapid depolarization phase of the action potentials of myocardial contractile
cells is due to which ion(s)?
Ca2+ only
K+ only
Na+ only
both Ca2+ and K+
both Na+ and K+
c. end-diastolic volume (EDV) - answer ✔✔-Match each term with its definition.
,A. cardiac output (CO)
B. heart rate (HR)
C. end-diastolic volume (EDV)
D. stroke volume (SV)
E. end-systolic volume (ESV)
the volume of blood in the ventricle available to be pumped out of the heart during one contraction
E. end-systolic volume (ESV) - answer ✔✔-Match each term with its definition.
A. cardiac output (CO)
B. heart rate (HR)
C. end-diastolic volume (EDV)
D. stroke volume (SV)
E. end-systolic volume (ESV)
the volume of blood left in the ventricle after it contracts
stroke volume. - answer ✔✔-The volume of blood ejected from each ventricle during a contraction is
called the
end-diastolic volume.
stroke volume.
cardiac reserve.
cardiac output.
end-systolic volume.
Tropomyosin is pulled away from the myosin-binding site on actin. - answer ✔✔-What happens when
calcium binds troponin?
, Troponin binds to actin and causes sarcomere shortening.
Troponin changes shape and covers the SR calcium channel, which is a form of negative feedback.
Tropomyosin is pulled away from the myosin-binding site on actin.
Troponin releases myosin and activates actin.
pressure - answer ✔✔-The driving force for blood flow is a(n) ________ gradient.
gravity
pressure
osmotic
volume
a decrease in cardiac output - answer ✔✔-Which would NOT cause an increase in blood pressure?
an increase in arterial resistance
a decrease in cardiac output
a decrease in arterial diameter
an increase in sympathetic activity
B. QRS complex - answer ✔✔-Match the name of the wave with the correlated event.
A. P wave
B. QRS complex
C. T wave
D. PR segment
E. ST segment
ventricular depolarization
