bloodstream definition biology

Rh blood group system, system for classifying blood groups according to the presence or absence of the Rh antigen, often called the Rh factor, on the cell membranes of the red blood cells (erythrocytes).The designation Rh is derived from the use of the blood of rhesus monkeys in the basic test for determining the presence of the Rh antigen in human blood. Aside from transferring blood as a whole, parts of blood, such as red blood cells, platelets or plasma can also be transferred to individuals.

Blood serum is the clear liquid that remains after blood clots. Endocrine glands are tissues or organs that excrete chemical substances (hormones) directly into the blood. The flowing blood as it is encountered in the circulatory system, as distinguished from blood that has been removed from the circulatory system or sequestered in a part; thus, something added to the bloodstream may be expected to become distributed to all parts of the body through which blood is flowing. noun (1) The circulating fluid (plasma) and suspended formed element s, such as red blood cells, white blood cells and platelets in the vascular system of humans and other vertebrates.

Lipoproteins in blood plasma have been intensively studied because of their role in the transport of cholesterol. Donor blood is tested for HIV, hepatitis, syphilis, West Nile virus and other diseases before transfusion. For everyone who is involved in the education of deaf children, deafblind children and visually impaired children and young people, the young people themselves and their families. Blood pressure readings measure systolic and diastolic pressures as the heart goes through the cardiac cycle.In the systole phase of the cardiac cycle, the heart ventricles contract (beat) and pump blood into the arteries.

Often confused with plasma, which is the liquid portion of blood prevented from clotting, serum has a number of medical uses. Micelle (polymers) Organized auto-assembly formed in a liquid and composed of amphiphilic macromolecules, in general amphiphilic di- or tri-block copolymers made of solvophilic and solvophobic blocks.

Common endocrine glands are the hypothalamus, pineal, and adrenal glands. Blood Definition Blood is the body fluid in humans and other animals that delivers the essential materials for life to the body’s cells. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

The field is concerned with the structure, function, and classification of such organisms and with ways of …

In the medical world, the distinction is important: While a sample of blood plasma allows for a better understanding of the blood's condition as it circulates through a given body, a blood serum sample removes most of the cells and platelets that may interfere with the process of testing for certain diseases and conditions. Plasma, also called blood plasma, the liquid portion of blood. Assimilation is the process of absorption of vitamins, minerals, and other chemicals from food within the gastrointestinal tract.In humans this is always done with a chemical breakdown (enzymes and acids) and physical breakdown (oral mastication and stomach churning).