How Do You Spell LUNULA VALVULAE SEMILUNARIS?

1. The term "lunula valvulae semilunaris" refers to a structure found in the human heart called the semilunar valve cusp or the semilunar valve lunula. The semilunar valves are a set of three valves located in the large blood vessels leaving the heart: the aortic valve, the pulmonary valve, and the tricuspid valve. The lunula valvulae semilunaris specifically refers to the crescent-shaped region or structure present in these valves.

   This structure is named so because it resembles a small, half-moon-shaped or crescent-shaped depression found at the base of each semilunar valve. It is located on the side of the valve oriented towards the aorta or the pulmonary artery, depending on the specific valve. The lunula valvulae semilunaris plays a crucial role in the opening and closure of the semilunar valves, regulating the flow of blood leaving the heart. It helps to prevent the backflow of blood by ensuring that the valves open fully during ventricular contraction and close tightly during relaxation, allowing blood to flow in one direction only.

   Functionally, the lunula valvulae semilunaris assists in maintaining and controlling smooth blood flow, preventing turbulent or regurgitant flow. It also contributes to the efficient pumping action of the heart by aiding the synchronization of the valves' opening and closing movements. Overall, the term "lunula valvulae semilunaris" refers to the distinct crescent-shaped anatomical feature in the semilunar valves, which is essential for their proper functioning in the circulatory system.

2. The free border of a semilunar valve at each side of the nodulus or corpus Arantii.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

Common Misspellings for LUNULA VALVULAE SEMILUNARIS