Question

choose the correct answer.
d is which valve?
mitral
pulmonary semilunar
ventricle
left atrium

Explanation:

To determine the valve labeled D in the heart diagram, we analyze the options:

• "ventricle" is a chamber, not a valve, so eliminate.
• "left atrium" is a chamber, not a valve, so eliminate.
• "pulmonary semilunar" valve is in the pulmonary trunk (between right ventricle and pulmonary artery), while the mitral (bicuspid) valve is between the left atrium and left ventricle. In typical heart valve labeling, the mitral valve (also called bicuspid) is between left atrium (B) and left ventricle (C), and D here corresponds to the mitral valve.
• The pulmonary semilunar is for the pulmonary artery, not this position.

Answer:

mitral