BIO E109 Cardiovascular system Questions With Complete
Solutions
_____ can help assess:
1. Heart rate
2.
3.
4. Coordination(Fibrillation) Correct Answers ECGs; Heart
rhythm; Conduction blocks
_____-______=Stroke volume Correct Answers End diastolic
volume- End systolic pressure
artial fibrillation Correct Answers uncoordinated contraction of
the atria, P wave is inconsistant
AV Conduction block Correct Answers SA node signal
blocked, ventricle contraction dependent on AV or purkinje
fibers
(P wave in random areas)
Blood flows back into the cusps of semilunar valves and snaps
them closed Correct Answers isovolumetric ventricular
relaxation
both sets of chambers are relaxed and ventricles fill passively
Correct Answers Late distole
Ca2+ ions bind to ____ to initiate contraction. Correct Answers
Troponin
, Depolarizaton moves ______ through atria and AV node and
moves_____ through the center of the ventricles and apex.
Correct Answers slowly; rapidly
During diastole, volume is ____, pressure is _____. Valve
pressure will____. Correct Answers increasing, decreasing;
increasing
During systole, volume is ____ while pressure is ____. Valve
pressure will ___. Correct Answers decreasing; increasing;
decrease
Extrinsic control can directly control stroke volume by____.
Correct Answers Releasing norepinephrine to trigger L-type
Ca2+ channels to let Ca2+ into the cell.
Fill in the Missing slots for the cardiac cycle:
1. Late diastole
2.
3.
4. Ventricular ejection
5. Correct Answers 2. Arterial systole
3. isovolumetric ventricular contraction
5. Isovolumetric ventricular relaxation
How does Ca2+ enter the cardiac muscle cell? Correct Answers
an adjacent AP signal is sent, triggers L-type ca2+ channel to
open.
How is the Na+ gradient maintained in cardiac muscle upon
relaxation? Correct Answers Na+-K+-Atpase
Solutions
_____ can help assess:
1. Heart rate
2.
3.
4. Coordination(Fibrillation) Correct Answers ECGs; Heart
rhythm; Conduction blocks
_____-______=Stroke volume Correct Answers End diastolic
volume- End systolic pressure
artial fibrillation Correct Answers uncoordinated contraction of
the atria, P wave is inconsistant
AV Conduction block Correct Answers SA node signal
blocked, ventricle contraction dependent on AV or purkinje
fibers
(P wave in random areas)
Blood flows back into the cusps of semilunar valves and snaps
them closed Correct Answers isovolumetric ventricular
relaxation
both sets of chambers are relaxed and ventricles fill passively
Correct Answers Late distole
Ca2+ ions bind to ____ to initiate contraction. Correct Answers
Troponin
, Depolarizaton moves ______ through atria and AV node and
moves_____ through the center of the ventricles and apex.
Correct Answers slowly; rapidly
During diastole, volume is ____, pressure is _____. Valve
pressure will____. Correct Answers increasing, decreasing;
increasing
During systole, volume is ____ while pressure is ____. Valve
pressure will ___. Correct Answers decreasing; increasing;
decrease
Extrinsic control can directly control stroke volume by____.
Correct Answers Releasing norepinephrine to trigger L-type
Ca2+ channels to let Ca2+ into the cell.
Fill in the Missing slots for the cardiac cycle:
1. Late diastole
2.
3.
4. Ventricular ejection
5. Correct Answers 2. Arterial systole
3. isovolumetric ventricular contraction
5. Isovolumetric ventricular relaxation
How does Ca2+ enter the cardiac muscle cell? Correct Answers
an adjacent AP signal is sent, triggers L-type ca2+ channel to
open.
How is the Na+ gradient maintained in cardiac muscle upon
relaxation? Correct Answers Na+-K+-Atpase
