The Heart Answers

24 verified answers1 views
21
Free Preview

The main purpose of the mitral valve is to

A
keep blood from flowing out of the heart.
B
keep blood from flowing back to the right ventricle from the left ventricle.
C
keep blood from flowing back to the left atrium from the left ventricle.
22
Free Preview

What type of circulation involves the movement of blood to the rest of the body (such as the legs)?

A
systemic circulation
B
pulmonary circulation
C
heart circulation
D
respiratory circulation
24

What are the primary gases that are exchanged in the lungs?

A
oxygen
B
carbon dioxide
C
hydrogen
D
carbon monoxide

Did you find these answers helpful?