Which valve lies between the left atrium and left ventricle?

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Prepare for the Ivy Tech Anatomy and Physiology II (APHY 102) Heart Test with multiple-choice questions, detailed explanations, and study resources. Enhance your understanding and excel in your exam!

Multiple Choice

Which valve lies between the left atrium and left ventricle?

Explanation:
The valve between the left atrium and left ventricle is the bicuspid valve, also called the mitral valve. It has two cusps and is tethered by chordae tendineae to papillary muscles, which helps prevent the valve from flapping backward into the atrium when the left ventricle contracts. The other structures mentioned aren’t between the left atrium and left ventricle: the tricuspid valve lies between the right atrium and right ventricle; the pulmonary semilunar valve sits at the exit of the right ventricle into the pulmonary artery; and chordae tendineae are the string-like structures that support valve leaflets, not a valve themselves.

The valve between the left atrium and left ventricle is the bicuspid valve, also called the mitral valve. It has two cusps and is tethered by chordae tendineae to papillary muscles, which helps prevent the valve from flapping backward into the atrium when the left ventricle contracts. The other structures mentioned aren’t between the left atrium and left ventricle: the tricuspid valve lies between the right atrium and right ventricle; the pulmonary semilunar valve sits at the exit of the right ventricle into the pulmonary artery; and chordae tendineae are the string-like structures that support valve leaflets, not a valve themselves.

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