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Blood leaving capillaries first enter small.....
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Blood pressure in the arteries is much lower than in the veins
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Systolic pressure is the lowest blood pressure reading occurring during ventricular diastole.
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Veins contain valves that allow blood to flow in only one direction, toward the heart.
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Capillaries have very thick walls to withstand high blood pressure.
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The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs.
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The aorta is the largest artery that carries oxygenated blood to all body systems.
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The walls of arteries contain a thick layer of smooth muscle that can contract or relax to change the size of the arterial lumen.
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Arteries are thin-walled vessels that carry blood away from the heart.
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The lumen is the channel within these vessels through which blood flow
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The electrical signal next travels down the...................within the interventricular septum
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The atrioventricular bundle was formerly called the bundle of His
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Electricity traveling through the atria causes them to contract.
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The heart rate is regulated by the autonomic nervous system.
