Place the events of a cardiac cycle in order, starting with the return of deoxygenated blood to the heart.
A)The blood returns from the body to the right atrium.
B)The blood is directed to the left atrium.
C)The blood flows into the right ventricle.
D)The blood is routed to the body via the aorta.
E)The blood flows into the pulmonary vein.
F)The blood flows into the pulmonary artery.
G)The blood flows into the left ventricle.
H)The blood is sent to the lungs to pick up oxygen.

Question

Place the events of a cardiac cycle in order, starting with the return of deoxygenated blood to the heart.  
A)The blood returns from the body to the right atrium. 
B)The blood is directed to the left atrium. 
C)The blood flows into the right ventricle. 
D)The blood is routed to the body via the aorta. 
E)The blood flows into the pulmonary vein. 
F)The blood flows into the pulmonary artery. 
G)The blood flows into the left ventricle. 
H)The blood is sent to the lungs to pick up oxygen.

Quizplus · Accepted Answer

The correct sequence starts with deoxygenated blood returning to the right atrium (A), then moving to the right ventricle (C). From there, it is pumped through the pulmonary artery to the lungs (F), where it picks up oxygen (H). Oxygenated blood returns to the heart via the pulmonary vein (E), enters the left atrium (B), flows into the left ventricle (G), and is finally routed to the body through the aorta (D).

Place the Events of a Cardiac Cycle in Order, Starting