If the Beating Heart Makes a ʺLub-Dupʺ Sound, the ʺDupʺ

question 101

Multiple Choice

If the beating heart makes a ʺlub-dupʺ sound, the ʺdupʺ sound is caused by

• A) the apex of the heart hitting the anterior chest wall.
• B) vibrations that result from the semilunar valves slamming shut.
• C) a stenotic atrioventricular valve.
• D) the large force of the contracting ventricles.

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Definitions:

Monozygotic Twins

Twins sharing the same genetic makeup as a result of one fertilized egg dividing into two separate embryos.

Dizygotic Twins

Also known as fraternal twins, they are two offspring born from the same pregnancy and fertilized by separate eggs.

Childhood Cancer

Cancer types and occurrences found in individuals under 18 years of age, focusing on diseases unique to or most prevalent in this age group.

Discordant

Lacking harmony or agreement.