Thursday, July 21, 2011

Blood pressure

Blood pressure (BP) is the pressure of circulating blood on the walls of blood vessels is, and is one of the most important vital functions. If not precisely defined, the "pressure" usually refers to arterial pressure circulation. With each heartbeat, blood pressure varies between the maximum (systolic) and minimum (diastolic) blood pressure by davlenie.Srednee heart pumping and flow resistance in blood vessels is increased, with the circulating blood away from the heart to pressure drops arteriyam.Krovyanoe the fast of the small arteries and arterioles, and continues to decrease as the blood moves through the capillaries and back to the heart through the veins. Gravity, valves in the veins, as well as pumping muscle contractions, some other influences on BP at different points in the body.
Measuring blood pressure with no further detail is usually measured by systemic blood pressure in the arm of man. It is located on the inner side of the brachial artery at the elbow, forearm, the main blood vessel that carries blood from the heart izmeryaetsya.Chelovek that BP is generally in relation to systolic blood pressure to diastolic pressure (mm Hg), for example, 140/90 expressed.