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a heart condition marked by paroxysms of chest pain due to reduced oxygen to the heart
either of two heart valves through which blood flows from the atria to the ventricles
any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)
The smalles of all blodo vessles, typically having a diamtere just large neough for blood cells to pass through in single file. Capillaries have extremelyu thin walls to faciliate the exchange of material between the blood and the tissues.
an emergency procedure consisting of external cardiac massage and artificial respiration
Coronary Bypass Surgery
open-heart surgery in which the rib cage is opened and a section of a blood vessel is grafted from the aorta to the coronary artery to bypass the blocked section of the coronary artery and improve the blood supply to the heart
circulation of blood through the coronary blood vessels to deliver oxygen and nutrients to the heart muscle tissue
the blood pressure (as measured by a sphygmomanometer) after the contraction of the heart while the chambers of the heart refill with blood
a blood vessel in a fetus that bypasses pulmonary circulation by connecting the pulmonary artery directly to the ascending aorta
the fetal structure that allows most of the blood to bypass the liver and to flow from the umbilical vein to the vena cava
a record of the electrical activity of the heart that, if abnormal, may indicate heart disease
Connects the left and right atria, allowing blood to flow directly from the right to the left side of the heart
a valve in the heart that guards the opening between the left atrium and the left ventricle
destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle
circulation of blood from the pulmonary artery through the vessels in the lungs and back to the heart via the pulmonary vein, providing for the exchange of gases
fibers in the ventricles that transmit impulses to the right and left ventricles, causing them to contract
small, elongated mass of specialized cardiac muscle tissue just beneath the epicardium in the right atrium near the opening of the superior vena cava-starts impulses
pathway of circulation between the heart and the rest of the body except the lungs
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