GROSS ANATOMY

Detailed explanation-1: -The skeleton performs several functions: It serves as a point of attachment for the heart valves. The cardiac muscle bundles insert onto the fibrous skeleton. It prevents the valves from overstretching as blood passes through them.

Detailed explanation-2: -Subvalvular Apparatus. The subvalvular apparatus describes the structures beneath the AV valves that prevent the valves prom prolapsing. Valve prolapse means that the valves do not close properly, which may cause regurgitation or backflow of blood from the ventricle back into the atria, which is inefficient.

Detailed explanation-3: -The valves prevent the backward flow of blood. These valves are actual flaps that are located on each end of the two ventricles (lower chambers of the heart). They act as one-way inlets of blood on one side of a ventricle and one-way outlets of blood on the other side of a ventricle.

Detailed explanation-4: -The cardiac skeleton consists of four rings of dense connective tissue that surround the AV canals (mitral and tricuspid) and extend to the origins of the aorta and the pulmonary trunk, providing structure and support for the heart as well as electrical isolation between the atria and the ventricles.

Detailed explanation-5: -Heart valves are parts of your heart that act like doors. They open and close to let blood flow from one area of your heart to another. They help ensure that blood moves at the right time and in the correct direction. As the valves open and close, they create two sounds, which are your heartbeat.