Which of the Following Statements Are True of the Valves

question 8

Multiple Choice

Which of the following statements are true of the valves of the heart (Select all that apply) ?

• A)The pulmonary and aortic valves are important to prevent backflow of blood when the ventricles contract.
• B)The right and left AV valves are important to prevent backflow of blood when the ventricles relax.
• C)The pulmonary and aortic valves prevent backflow of blood from arteries to ventricles.
• D)The edges of the semilunar valves are anchored by the chordae tendineae and papillary muscles.
• E)The right and left AV valves prevent backflow of blood from atria to ventricles.
• F)The valve openings are kept from stretching by the fibrous skeleton of the heart.

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