Question

practice ii
the heart has four main valves: the tricuspid valve, the pulmonary valve, the
_____, and the aortic valve.
pulmonic valve
semilunar valve
atrial valve
mitral valve
arterial valve
ventricular valve

Explanation:

The heart has four main valves: the tricuspid valve (between the right atrium and right ventricle), the pulmonary valve (at the exit of the right ventricle to the pulmonary artery), the mitral valve (between the left atrium and left ventricle), and the aortic valve (at the exit of the left ventricle to the aorta). The other options are either incorrect names (pulmonic is a less common term but still refers to the pulmonary valve, but we need the standard - named valve for the left - side atrium - ventricle connection here; semilunar is a type of valve structure that both the pulmonary and aortic valves are, not a specific valve name; atrial, arterial, ventricular valves are not the standard names for these four main valves).

Answer:

mitral valve