★ Heart Structure and Double Circulation Quiz
When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the ________.
A. right ventricle to right atrium
B. left ventricle to left atrium
C. left atrium to the right atrium
D. right atrium to the left atrium
Select your answer:
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Health › View
What nutritional disorder is this animal suffering with?
A. Obesity
B. Diabetes
C. Metabolic bone disease
D. Scurvy
E. Taurine-depleted
Body Systems › View
The air sacs that are covered with capillaries where gas exchange takes place
A. bronchi
B. lungs
C. oxygen
D. alveoli