THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Your aortic valve is one of two semilunar valves. Semilunar valves connect your heart ventricles (lower chambers) and arteries. Semilunar valves get their name from the crescent moon shape of the flaps that make up the valve.

Detailed explanation-2: -As the heart muscle contracts and relaxes, the valves open and shut. This lets blood flow into the ventricles and atria at alternate times. Here is a step-by-step description of how the valves work normally in the left ventricle: When the left ventricle relaxes, the aortic valve closes and the mitral valve opens.

Detailed explanation-3: -The aortic valve is one of four heart valves and is the final one encountered by oxygenated blood as it leaves the heart. It is also called aortic semilunar due to its semilunar shape. It is between the left ventricle and the aorta to ensure that oxygen-rich blood does not flow back into the left ventricle.

Detailed explanation-4: -The semilunar valves are closed because the ventricular pressure is lower than that in the aorta and the pulmonary artery (fig. 1.1). The contraction is represented by a colour change of myocardium. The ventricles contract and all valves are closed, so no blood can be ejected.