PHYS 261 FINAL EXAM QUESTIONS AND
ANSWERS 100% PASS 2026 EDITION
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 -
ANS 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+
1
@2026 EDITION ALLRIGHTS RESERVED
,both Na+ and K+ - ANS 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 - ANS 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 - ANS E. end-systolic volume (ESV)
The volume of blood ejected from each ventricle during a contraction is called the
end-diastolic volume.
2
@2026 EDITION ALLRIGHTS RESERVED
, stroke volume.
cardiac reserve.
cardiac output.
end-systolic volume. - ANS 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. - ANS 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 - ANS 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
3
@2026 EDITION ALLRIGHTS RESERVED
ANSWERS 100% PASS 2026 EDITION
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 -
ANS 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+
1
@2026 EDITION ALLRIGHTS RESERVED
,both Na+ and K+ - ANS 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 - ANS 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 - ANS E. end-systolic volume (ESV)
The volume of blood ejected from each ventricle during a contraction is called the
end-diastolic volume.
2
@2026 EDITION ALLRIGHTS RESERVED
, stroke volume.
cardiac reserve.
cardiac output.
end-systolic volume. - ANS 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. - ANS 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 - ANS 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
3
@2026 EDITION ALLRIGHTS RESERVED
