Developments

Heart ♥ Organ for circulation of blood in the circulatory system.


Human heart with coronary arteries

Heart is a muscular organ, which transmits blood flow through all the vertebrates to all the parts of the body through constrained contraction.

The vertebrae heart is made up of the heart muscle, which is an involuntary muscular tissue.

Which is found only in the heart organ. The average human heart beats 72 times in a minute, which (about 66 years) beats 2.5 billion times in a lifetime. The human heart pumps 70 milliliters of blood in 1 minute, pumps 7600 liters (2000 gallons) in one day and 200 million liters of blood in its lifetime. Its weight is 250 to 300 grams in females and 300 to 350 grams in males.

From the posterior tissue of the middle germ level, the development of the cardiac genic plate is in the center of the nerve plate and in the center. In the cardiovascular plate, two different vascular pancreatic cell groups are formed on either side of the embryo. Each cell group collects and creates an intracellular canal which is continuous with a dorsal artery and a Vitelombylic vein. Because embryonic tissues are continuously ringing, two gaped cardiovascular tubes slip into the thoracic cavity and begin to germinate with each other and become fully organized in about 21 days.

In the Human body,

The heart is usually located in the middle of the chest, the largest part of the heart is below the left bone, although sometimes it is on the right. Dextro cardia heart usually looks left and right, Because the left heart is stronger in the left ventricle, it pumps in all parts of the body; left lung is smaller than the right lung, because the heart is left Ddh reaches the majority of the breast takes place surrounded coronary blood circulation Hakhrady and says it is covered by a bag which Pericardium, it is surrounded by the lungs. Pericardium is composed of two parts, fibrous pericardium which is composed of intact filamentary connective tissue.

Blood circulation system.

The function of blood circulation is to make the arteries and veins in our body.

Arterial artery takes from oxygenated pure blood to the heart Exception Pulmonary Artery Artery takes unclean blood from organ to lungs.

Veins carry impure blood; Existence from organ to limp – Pulmonary artery takes pure blood from lungs to heart.