If the cusps of an atrioventricular valve are damaged or functionally impaired so that they do not close completely during the normal point in the cardiac cycle, blood may flow backwards. This is called ________.
A) ischemia
B) regurgitation
C) thrombosis
D) automaticity
E) nodal depolarization

Question

Quizplus · Accepted Answer

When the cusps of an atrioventricular valve do not close completely during the normal point in the cardiac cycle, blood may flow backwards. This is called regurgitation. Ischemia refers to lack of blood flow to tissue, thrombosis refers to blood clots, automaticity refers to the ability of certain cells to generate their own electrical activity, and nodal depolarization refers to the electrical activity of the heart's pacemaker cells. None of these options describe the situation of defective valve cusps that results in blood flowing backwards.

If the Cusps of an Atrioventricular Valve Are Damaged or Functionally