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Stratified random sampling and quota sampling are both classified in the category of probability sampling techniques.
Circumflex Artery
A coronary artery that encircles the heart muscle, supplying blood and oxygen to the left atrium and the side and back of the left ventricle.
Bicuspid Valve
Another term for the mitral valve, located between the left atrium and left ventricle of the heart; it has two flaps (cusps).
Aortic Semilunar Valve
A valve in the heart between the left ventricle and the aorta that prevents blood from flowing back into the ventricle.
Pulmonary Trunk
A major blood vessel that exits the right ventricle of the heart, dividing into the left and right pulmonary arteries to carry deoxygenated blood to the lungs.
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