What Is Basic Physiology And Basic Anatomy Of Human Heart?
The heart is a specialised muscle with 4 chambers: the top 2 are called atria while the bottom two are called ventricles. The outer layer of the heart is the pericardium, and the inner layer is the endocardium. The muscular part of the heart is called the myocardium. Deoxygenated blood is collected in the right atrium while the freshly oxygenated blood is pumped our around the body from the left ventricle. The blood passes form the right atrium to the right ventricle and then moves onto the lungs for oxygenation. While returning, it is collected in the left atrium before making its way into the left ventricle for distribution. The heart has an electrical component known as atrioventricular node. Fibres inside the heart which are involved in contraction and relaxation of the heart are known as the ‘bundle of his.’ The left ventricle has the thickest musculature as it has to contract with great force to push the blood through the main artery (the aorta) with pressure. The right ventricle
