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14 Cards in this Set
- Front
- Back
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Arteries
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Carry blood away from the heart, rapid blood movement, high pressure
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Veins
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Carry blood back to the heart, low blood velocity, low pressure
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Valves
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Prevent backflow of blood
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Capillaries
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Exchange of materials, lack outer two layers, thin endothelium wall, network of capillaries infiltrate every organ and tissue
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Areteriole
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Vessel that transports blood between an artery and capillary bed
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Venule
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Vessel that transports blood between a capillary bed and vein
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Atria (Mammalian Heart)
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Thin walls, function as collection chambers for blood returning to heart
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Ventricles
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Thick, powerful walls that pump blood to organs
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Cardiac Cycle
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One complete sequence of pumping, as heart contracts, and filling, as it relaxes and chambers fill with blood (lasts ~0.8 secs)
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"Lub" (Heart Sound)
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Created by recoil of blood against the closed AV valves
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"Dup" (Heart Sound)
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Recoil of blood against semilunar valves
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Cardiac Output
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the volume of blood per minute that the left ventricle pumps into the systemic circuit; depends on heart rate and stroke volume
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Stroke Volume
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Amount of blood pumped by left ventricle each time it contracts
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Sinoatrial Node (SA node)
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"Pacemaker", sets the rate and timing at which cardiac muscle cells contract – located in wall of right atrium
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