PHYS 261 Final Exam Questions and
Correct Answers |Already Graded A+||Brand
New Version!!!
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 -
CORRECT ANSWER -D. stroke volume (SV)
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+ - CORRECT ANSWER -Na+ only
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 - CORRECT ANSWER -c. end-diastolic volume (EDV)
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 - CORRECT ANSWER -E. end-
systolic volume (ESV)
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. - CORRECT ANSWER -stroke volume.
, 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. - CORRECT ANSWER -Tropomyosin is pulled
away from the myosin-binding site on actin.
The driving force for blood flow is a(n) ________ gradient.
gravity
pressure
osmotic
volume - CORRECT ANSWER -pressure
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 - CORRECT ANSWER -a decrease in cardiac output
Match the name of the wave with the correlated event.
A. P wave
B. QRS complex
C. T wave
Correct Answers |Already Graded A+||Brand
New Version!!!
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 -
CORRECT ANSWER -D. stroke volume (SV)
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+ - CORRECT ANSWER -Na+ only
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 - CORRECT ANSWER -c. end-diastolic volume (EDV)
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 - CORRECT ANSWER -E. end-
systolic volume (ESV)
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. - CORRECT ANSWER -stroke volume.
, 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. - CORRECT ANSWER -Tropomyosin is pulled
away from the myosin-binding site on actin.
The driving force for blood flow is a(n) ________ gradient.
gravity
pressure
osmotic
volume - CORRECT ANSWER -pressure
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 - CORRECT ANSWER -a decrease in cardiac output
Match the name of the wave with the correlated event.
A. P wave
B. QRS complex
C. T wave
