★ Circulatory & Respiratory System Quiz
What is function of the dome-shaped diaphragm?
A. This is where gas exchange happens.
B. Air passes through the diaphragm on the way to the lungs.
C. It attaches to the lungs to help in breathing.
D. It is under the lungs and keeps them from falling down to your stomach.
Preview next quiz:
Carry nutrients in the blood and is made mostly of water. It is like the broth of the blood.
A. plasma
B. red blood cells
C. white blood cells
D. platelets
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