Which valve closes between the right ventricle and the pulmonary trunk?

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Study for the Ivy Tech Anatomy and Physiology II Heart Test. Access flashcards and multiple choice questions, each with helpful hints and explanations. Prepare effectively for your exam and bolster your understanding of heart anatomy and physiology!

Multiple Choice

Which valve closes between the right ventricle and the pulmonary trunk?

Explanation:
The valve between the right ventricle and the pulmonary trunk is the pulmonary semilunar valve. It opens to let blood flow from the right ventricle into the pulmonary trunk during ventricular contraction and closes when the ventricle relaxes, preventing blood from flowing back into the ventricle. The tricuspid valve sits between the right atrium and right ventricle, the bicuspid (mitral) valve sits between the left atrium and left ventricle, and chordae tendineae are the tendinous cords that anchor the atrioventricular valve leaflets to papillary muscles rather than acting as a valve themselves.

The valve between the right ventricle and the pulmonary trunk is the pulmonary semilunar valve. It opens to let blood flow from the right ventricle into the pulmonary trunk during ventricular contraction and closes when the ventricle relaxes, preventing blood from flowing back into the ventricle. The tricuspid valve sits between the right atrium and right ventricle, the bicuspid (mitral) valve sits between the left atrium and left ventricle, and chordae tendineae are the tendinous cords that anchor the atrioventricular valve leaflets to papillary muscles rather than acting as a valve themselves.

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