Figure 20-2 Cardiac Cycle

Use Figure 20-2 to answer the following questions:
-What occurs at the circle labeled "3" on the graph?
A) atrial systole
B) isovolumetric relaxation
C) atrial diastole and ventricle systole
D) atrial ejection
E) ventricular ejection

Question

Figure 20-2 Cardiac Cycle
 
Use Figure 20-2 to answer the following questions:
-What occurs at the circle labeled "3" on the graph?
A) atrial systole 
B) isovolumetric relaxation 
C) atrial diastole and ventricle systole 
D) atrial ejection 
E) ventricular ejection

Quizplus · Accepted Answer

Circle labeled "3" represents the period of time during which the atria are relaxed (diastole) and the ventricles are contracting (systole). This is known as atrial diastole and ventricle systole.