Figure 20-2 Cardiac Cycle

Use Figure 20-2 to answer the following questions:
-What volume is labeled "G" on the graph?
A) cardiac output
B) stroke volume
C) end-systolic volume
D) end-diastolic volume
E) ejection fraction

Question

Figure 20-2 Cardiac Cycle
 
Use Figure 20-2 to answer the following questions:
-What volume is labeled "G" on the graph?
A) cardiac output 
B) stroke volume 
C) end-systolic volume 
D) end-diastolic volume 
E) ejection fraction

Quizplus · Accepted Answer

End-systolic volume (ESV) is the volume of blood in a ventricle at the end of contraction, or systole, and the beginning of filling, or diastole. "G" on a cardiac cycle graph typically indicates the point after the ventricle has contracted, marking the lowest volume of blood in the ventricle during the cycle, which corresponds to the end-systolic volume.