The human heart, a muscular organ located in the mediastinum, is a vital component of the circulatory system. It is responsible for pumping blood throughout the body, supplying oxygen and nutrients to the tissues, and removing carbon dioxide and other wastes.
tructure of the Heart
The heart is composed of several layers:
1. Myocardium: This is the heart’s muscular wall, which contracts to pump blood.
2. Pericardium: A thin layer of tissue that covers the outside of the heart.
3. Endocardium: This lines the inside of the heart.
The heart is divided into a right and left side by the septum. Each side is further subdivided into two chambers:
1. Atrium: The upper chamber that receives blood.
2. Ventricle: The lower chamber that pumps blood out of the heart.
The right atrium and ventricle are on the right side, while the left atrium and ventricle are on the left side. The walls of the ventricles are thicker than those of the atria due to the high pressure of blood they need to pump[^1
