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Cardiovascular Syste

Key Terms

TermDefinition
leaflets flat, leaf-shaped structures that comprise the vales of the heart and prevent the backflow of blood
lumen tubular space or channel within an organ or structure of the body; space within an artery, vein, intestine, or tube
regurgitation backflow or ejecting of contents through an opening
sphincters circular muscles found in a tubular structure or hollow organ that constrict or dilate to regulate passage od substances through its opening
vasoconstriction narrowing of the lumen of a blood vessel that limits bloof flow, usually as a result of diseases, medications, or physiological processes
vasodilation widening of the lumen of a blood vessel that limits blood flow, usually as a result of diseases, medications, pr physiological processes
viscosity thickness or a measure of how resistant a liquid is to flowing
Created by: user-2059705
 

 



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