Which of the following terms means to flow backward?
A) infarct
B) regurgitation
C) stent
D) palpitation
B
Explanation: Regurgitation means to flow backward. An infarct is an area of tissue within an organ or part that undergoes necrosis following the loss of its blood supply. A stent is a stainless steel tube placed within a blood vessel or duct to widen the lumen. A palpitation is a pounding, racing heartbeat.
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