Brief Explanation of Human Heart

 

The human heart is a muscular organ that is responsible for pumping blood throughout the body. It is located in the chest, between the lungs and above the diaphragm. The heart is divided into four chambers: the right atrium, right ventricle, left atrium, and left ventricle. Blood enters the right atrium from the body, then it is pumped into the right ventricle and from there it is pumped to the lungs, where it receives oxygen. Oxygenated blood then returns to the left atrium, from where it is pumped into the left ventricle and from there it is pumped to the rest of the body. The heart is controlled by electrical impulses generated by a natural pacemaker called the sinoatrial (SA) node. The heart beats about 60 to 100 times per minute and pumps around 5 liters of blood per minute.

 

1.The heart is about the size of a fist and weighs about 250-300 grams (0.55-0.66 pounds).

2.The heart beats approximately 100,000 times per day and 35 million times per year.

3.The heart pumps approximately 5.5 liters (1.5 gallons) of blood per minute.

4.Blood carries oxygen and nutrients to the body's cells and removes waste products.

5.The heart muscle is called the myocardium and it is responsible for the rhythmic contractions that pump blood.

6.The heart has its own electrical system, which controls the rate and rhythm of heartbeats.

7.The heart can continue to beat even when separated from the body, as long as it has an adequate supply of oxygen.

8.The right side of the heart pumps deoxygenated blood to the lungs for oxygenation, while the left side pumps oxygenated blood to the rest of the body.

9.The heart is surrounded by a sac called the pericardium, which helps to protect it and reduce friction as it beats.

10.The heart is one of the most important organs in the body, as it is responsible for maintaining the circulation of blood and oxygen to all the other organs and tissues