Anatomy of Heart|
I don't have any particular topic today but I will write for training.
I'll try to explain about the human body because I'm a nurse and have a great interest in the medical science and human beings.
Human beings have a heart in the middle of their breast.
There're four chambers in the heart.
The upper two chambers are called atriums, and the lower two chambers are called ventricles.
The right atrium and the right ventricle are linked by a valve called the tricuspid valve.
The left atrium and the left ventricle are linked by a valve called the mitral valve.
Each atrium and each ventricle are generally not linked directly.
The right atrium directly recieves blood from body circulation and pumps it into the right ventricle via the tricuspid valve.
The right ventricle pumps it into the pulmonary artery via the pulmonary valve, and blood is oxygenated in the lungs.
The left atrium receives oxygenated blood from the pulmonary vein and pumps it into the left ventricle via the mitral valve.
The left ventricle pumps it into the aorta, which is the main artery in the human body, via the aortic valve.
The aorta delivers oxygenated blood all over the body.
Oxygen in the blood is used by various organs and then the blood returns to the right atrium again.
If the heart stops moving, the human being will die, because organs can't receive oxygen to use.
It means heart is the most important organ in human body.