*Transport of material in human being..

Transport of material in human body..

MADE BY-Gaurav kumar

*Components..* Heart

* Blood

* vessels

* (1) arteries

* (2) veins

* (3) capillaries

*Blood vessel system and

heart..

*Blood vessal systemThe blood vessels are the part of thecirculatory

system that transports bloodthroughout the human body. There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart. The word vascular, meaning relating to the blood vessels, is derived from the Latin vas, meaning vessel. Avascular refers to being without (blood) vessels

*Heart.. *In mammals, the function of the right side of the heart is to

collect de-oxygenated blood, in the right atrium, from the body (via superior and inferior vena cavae) and pump it, through the tricuspid valve, via the right ventricle, into the lungs (pulmonary circulation) so that carbon dioxide can beexchanged for oxygen. This happens through the passive process of diffusion. The left side (see left heart) collects oxygenated blood from the lungsinto the left atrium. From the left atrium the blood moves to the left ventricle, through the bicuspid valve (mitral valve), which pumps it out to the body (via the aorta). On both sides, the lower ventricles are thicker and stronger than the upper atria. The muscle wall surrounding the left ventricle is thicker than the wall surrounding the right ventricle due to the higher force needed to pump the blood through the systemic circulation.

*Thank you..