AEMCA Practice Exam

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Prepare for the AEMCA Exam with flashcards and multiple-choice questions, complete with hints and explanations. Get exam-ready today!

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Which atrioventricular valve permits blood to flow from the right atrium to the right ventricle?

Bicuspid
Tricuspid
Pulmonary
Aortic

The correct answer is: Tricuspid

The tricuspid valve is the atrioventricular valve that allows blood to flow from the right atrium into the right ventricle. It is located between these two chambers of the heart and is specifically designed to prevent the backflow of blood when the right ventricle contracts. The structure of the tricuspid valve includes three leaflets, or cusps, which open to facilitate blood flow and close to maintain one-way circulation. The bicuspid (or mitral) valve is responsible for the flow of blood from the left atrium to the left ventricle, not involved in the right side of the heart's circulation. The pulmonary valve pertains to blood flow exiting the right ventricle into the pulmonary artery, while the aortic valve deals with blood flowing from the left ventricle into the aorta. Therefore, the tricuspid valve plays a critical role in the heart's right-sided blood flow and supports proper circulation to the lungs for oxygenation.