Cardiovascular System Flashcards
Leaflets
flat, leaf shaped structures that comprise the valves of the heart and prevent backflow of blood.
lumen
tublar space of 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 tubular structures or hollow passages that constrict or dilate to regulate passage of substances through its opening
vasoconstriction
Narrowing of the lumen of a blood vessel that limits blood flow, usually as a result of diseases, medications, or physiological process.
vasodilation
widening of the lumen of a blood vessel caused by the relaxing of the muscles of the vascular walls.
Viscosity
thickness or a measure of how resistant a liquid is to flowing.
aneurysm/o
aneurysm (widened blood vessel)
angi/o and vascul/o
vessel (blood or lymph)
aort/o
aorta
arteri/o
artery
arteriol/o
arteriole
atri/o
atrium
ather/o
fatty plague
cardi/o or coron/o
heart
