Match the following cardiac cycle events to the opening and closing of the atrio
ID: 197392 • Letter: M
Question
Match the following cardiac cycle events to the opening and closing of the atrioventricular or semilunar heart valves
the pressure in the aorta is higher than the pressure in the left ventricle
atrioventricular valves close
the ventricles are fully contracted (systole)
semilunar valves close
the ventricles are fully relaxed (diastole)
semilunar valves open
the pressure in the right ventricle is higher than the pressure in the right atrium
semilunar valves open
atrioventricular valves close
semilunar valves open
Atrioventricular valves open
semilunar valves close
Match the following cardiac cycle events to the opening and closing of the atrioventricular or semilunar heart valves
Question Selected Matchthe pressure in the aorta is higher than the pressure in the left ventricle
A.atrioventricular valves close
the ventricles are fully contracted (systole)
D.semilunar valves close
the ventricles are fully relaxed (diastole)
B.semilunar valves open
the pressure in the right ventricle is higher than the pressure in the right atrium
B.semilunar valves open
All Answer Choices A.atrioventricular valves close
B.semilunar valves open
C.Atrioventricular valves open
D.semilunar valves close
Explanation / Answer
The semilunar valve opens when the pressure in the right ventricle is higher than the pressure in the right atrium.
Ventricular systole:
Ventricles are fully contracted.
AV valves = Closed
Semilunar valves = Open
Diastole:
Ventricles are fully relaxed.
AV valves = Open
Semilunar valves = Closed
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