The function of valves in the heart is to
A) permit blood to flow in either direction.
B) permit alternating flow of blood forward and backward.
C) prevent backflow.
D) act as a pacemaker.
Correct Answer:
Verified
Q66: The pulmonary veins
A)contain deoxygenated blood.
B)leave the hilum
Q67: The most superior aspect of the sternum
Q68: The thickest myocardium is in the
A)right atrium.
B)right
Q69: The vessel(s) associated with the right ventricle
Q70: The number of pairs ribs articulating with
Q72: Which chamber of the heart forms the
Q73: The most anterior chamber of the heart
Q74: The most posterior chamber of the heart
Q75: Which is not in the mediastinum?
A)great vessels
B)esophagus
C)thymus
D)trachea
E)All
Q76: The hilum of the left lung
A)is higher
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