Which chamber forms the apex of the heart?

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Prepare for the NBME Gross Anatomy Test. Study with flashcards and multiple choice questions; each question includes hints and explanations. Ace your exam!

Multiple Choice

Which chamber forms the apex of the heart?

Explanation:
The tip of the heart, the apex, is formed primarily by the left ventricle. Its long, thick-walled, conical chamber extends downward and to the left, creating the pointed apex that lies in the left fifth intercostal space near the midclavicular line. The right ventricle forms most of the anterior surface and does not reach the apex, while the atria form the base of the heart at the opposite end. Thus, the left ventricle is the chamber that defines the apex.

The tip of the heart, the apex, is formed primarily by the left ventricle. Its long, thick-walled, conical chamber extends downward and to the left, creating the pointed apex that lies in the left fifth intercostal space near the midclavicular line. The right ventricle forms most of the anterior surface and does not reach the apex, while the atria form the base of the heart at the opposite end. Thus, the left ventricle is the chamber that defines the apex.

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