The pulmonic valve is also referred to as the pulmonary valve, and it has three cusps. This valve is located between the right ventricle and the pulmonary artery. It is described as a semilunar valve that has many similarities with the aortic valve. Under normal conditions the pulmonic valve opens into a ventricular systole, when the internal pressure inside the right ventricle of the heart is increased and is greater than the pressure in the pulmonary artery.
This pulmonary valve will be closed during the process of ventricular systole. This happens when the internal pressure inside the right ventricle is well below the pressure inside the pulmonary artery. An anterior view of the opened heart will display the pulmonic valve with the various arteries and ventricles.
While recording heart sound, the P2 component of the second heart sound (S2) will be connected with the closure of the pulmonic valve. On the other hand, when the right heart ventricle is in considerably low pressure, the P2 component of the second heart sound will be relatively low when compared with the A2 component. But in youngsters, both the sounds associated with the opening and closing of the pulmonic valve will be separated and it is considered to be physiologically normal.