Category: Anatomy

The heart has an electrical system that synchronizes its contraction efficiently.
The upper chambers, the atriaThe atria are two of the four cavities of the heart. There is a right atrium and a left atrium. They are like reservoirs for the right and left ventricules., must first contract to fill the ventricles in the lower part of the heart. These, in turn, will compress and, in an inescapable upward movement, spill their contents into the large vessels at the top.

Tricuspid valves include the pulmonary and the aortic valves. Each has 3 cusps that fit onto a fibrous ring in the cardiac skeleton. These valves separate the pulmonary artery from the right ventricle and the aorta from the left ventricle.

The 2 valves that separate the ventricles from the atriaThe atria are two of the four cavities of the heart. There is a right atrium and a left atrium. They are like reservoirs for the right and left ventricules. are called atrioventricular valves. The tricuspid valve is located on the right side and the mitral valve is on the left.