Human Anatomy Study Set 4
Quiz 22: Heart
How Many Half-Moon Shaped,pocketlike Cusps Are Found in Each Semilunar
How many half-moon shaped,pocketlike cusps are found in each semilunar valve? A)1 B)2 C)3 D)4 E)6
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Which valve prevents the backflow of blood into the left ventricle when the ventricles relax? A)Left atrioventricular valve B)Aortic semilunar valve C)Right atrioventricular valve D)Pulmonary semilunar valve E) None of these answers is correct.
The chordae tendineae are made out of A)collagen fibers. B)elastin fibers. C)hyaline cartilage. D)reticulin fibers. E)trabeculae carneae.
As blood is pumped into the arterial trunks past the semilunar valves,it A)pushes against the cusps,forcing the valves open. B)pushes against the cusps,forcing the valves closed. C)fills the cusps,causing them to expand and block the backflow of blood. D)fills the cusps,causing them to expand and open up for the flow of blood. E)None of these answers is correct.
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