As a physician listens to the heart of a human patient, he hears an atypical "lub" sound. Which part of the heart might be malfunctioning?

A. the AV valve
B. the semiliunar valves
C. the right atrium
D. the right ventricle


A. the AV valve

Biology & Microbiology

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Indicate whether the statement is true or false

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a. heart muscle b. connective tissue c. fat tissue d. red blood cells e. nervous tissue

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What will be an ideal response?

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A. left ventricle B. left atrium C. right ventricle D. aorta E. right atrium

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