Archives for April 2024

The sinuses of pulmonary trunk are 3 widenings located at the base of the pulmonary trunk.

The commissures of semilunar leaflets of pulmonary valve are represented by the areas where the margins of 2 leaflets adjoin with the wall of the pulmonary trunk.

The lunules of semilunar leaflets refer to the crescent-shaped surfaces of coaptation located peripherally near the commissures of the leaflets in the pulmonary valve.

The nodules of semilunar leaflets, also known as the nodules of Arantius, are thickened nodular structures located at the centre of each zone of apposition where adjacent leaflets of the pulmonary valve coapt. They help to ensure proper closure of the valve during diastole.

The anterior semilunar leaflet is a specific pulmonary valve leaflet. It is named based on its location.