Archives for April 2024

The left atrium is the most posterior thin-walled heart chamber. It receives blood from the lungs via four pulmonary veins. It houses an appendage, a considerable venous component, and a vestibule.

Chordae tendineae of right atrioventricular valve are fibrous string cords that connect the valve leaflets to the papillary muscles. In the right ventricle the septal leaflet of the tricuspid valve is anchored directly to the septum.

The septal papillary muscle of right ventricle is the smallest papillary muscle of the tricuspid valve. It arises from the parietal limb of the septomarginal trabecula.

The inferior papillary muscle of right ventricle arisese from below and is the second largest papillary muscle of the tricuspid valve.

The anterior papillary muscle of right ventricle is the largest papilary muscle of the tricuspid valve. The septomarginal trabecula provides support to this muscle.