The total quantity of blood within an individual depends upon body weight a person weighing 70 kg (154 lb) has about 4.5 liters of blood in the body.īlood is composed of two parts: the fluid portion is called plasma, and the solid portion or formed elements (suspended in the fluid) consists of the blood cells ( erythrocytes and leukocytes) and the platelets. It also helps regulate body temperature by carrying excess heat from the interior of the body to the surface layers of the skin, where the heat is dissipated to the surrounding air.īlood varies in color from a bright red in the arteries to a duller red in the veins. The blood distributes hormones from the endocrine glands to the organs they influence. In an emergency, blood cells and antibodies carried in the blood are brought to a point of infection, or blood-clotting substances are carried to a break in a blood vessel. It has an essential role in the maintenance of fluid balance. It transports nutritive substances and metabolites to the tissues and removes waste products to the kidneys and other organs of excretion. It transports oxygen from the lungs to the body tissues, and carbon dioxide from the tissues to the lungs. doi:10.The fluid that circulates through the heart, arteries, capillaries, and veins and is the chief means of transport within the body. Management of right colonic uncomplicated diverticulitis: outpatient versus inpatient management. National Institute of Diabetes and Digestive and Kidney Diseases. An overview of 25 years of incidence, treatment and outcome of colorectal cancer patients. Colorectal cancer is a leading cause of cancer incidence and mortality among adults younger than 50 years in the USA: a SEER-based analysis with comparison to other young-onset cancers.
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