166-178

166-178 - Tiffany Chang HP Final Review 166-178 166 Basic biology of the heart and circulatory system a The heart a hollow muscular organ is

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Tiffany Chang HP Final Review 166-178 166. Basic biology of the heart and circulatory system a. The heart, a hollow muscular organ, is located at the center of the chest b. Right and left sides of the heart each have an upper chamber (atrium), which collects blood and pumps it into a lower chamber (ventricle, which pumps the blood out. c. Each ventricle has an “in” and “out” valve, which ensure that blood flows in only one direction i. Each valve consists of flaps, which open and close like one-way swinging dors. ii. Inlet valve – tricuspid valve iii. Outlet valve – pulmonic valve d. Circulatory system moves the blood to a site or sites where it can be oxygenated, and where wastes can be disposed. Circulation then brings new oxygenated blood to the tissues of the heart. i. Blood circulates through organs, where wastes are removed, and back to the lungs for fresh oxygen. This process repeats e. Circulation is necessary for the continued life of cells, tissues, and the whole organisms f. Veins carry dark red deoxygenated blood blood that does have much oxygen to the heart. They have thin walls and are flexible g. Arteries carry blood away from the heart and to parts of the body. 167. Carotid artery ultrasound a. Painless and harmless test that uses high-frequency sound waves to create pictures of the insides of the two large arteries in your neck. b. These arteries, called carotid arteries, supply your brain with oxygen- rich blood. (one on each side of the neck) c. Shows whether plaque has narrowed the carotid arteries 168. Epidemiology of heart disease a. CDC Risk Factors i.
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This note was uploaded on 10/23/2010 for the course HP 200 taught by Professor Roybal during the Fall '05 term at USC.

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166-178 - Tiffany Chang HP Final Review 166-178 166 Basic biology of the heart and circulatory system a The heart a hollow muscular organ is

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