Blood delivered to the capillaries of a specific tissue is blood flow and is measured in per minute. The specific amount of blood entering capillaries per unit time per gram of tissue is called . The ultimate goal of the cardiovascular system is adequate perfusion of all tissues. The amount of blood transported throughout the entire vasculature in a given period of time is blood flow and is usually expressed in per minute. This type of blood flow equals . If this increases, the amount of blood available to body tissues .

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

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b a mature ovary of a plant.