Heart diagram

What occurs at the area labeled C on the graph

AV valve closes

What occurs at the area labeled "B" on the graph? A) ventricular ejection occurs B) AV valve closes C) semilunar valve opens D) semilunar valve closes E) AV valve opens

Semi lunar valve closes

The phase in the cardiac cycle when the mitrial valve is closed and the aortic valve is open is the

Systolic ejection phase

What occurs at A on the graph

semilunar valve opens

What volume is labeled "E" on the graph?

stroke volume

What occurs on the circle labeled 4 on the graph

isovolumetric ventricular contraction

What occurs at the circle labeled 7 on the graph

isovolumetric ventricular relaxation

What is occurring in the left atrium at the circle labeled 2 on the graph

left atrium is in systole

What occurs at the circled label "5" on the graph?

peak systolic pressure

What occurs at the area labeled "D" on the graph?

both AV valve opens and diastolic refilling begins

What volume is labeled F on the graph

end diastolic volume

What volume is labeled G on the graph

end systolic volume