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A & P Cardiovascular
Cardiovascular Dynamics
Question | Answer |
---|---|
diastole | relaxation of the heart |
systole | contraction of the heart |
end diastolic volume | the volume in the ventricles at the end of diastole, just befor cardiac contraction |
stroke volume | the volume ejected by a single ventricular contraction |
end systolic volume | the volume remaining in teh ventricle after contraction |
cardiac output | the amount of blood the heart is able to pump per minute, hr X sv |
blood flow | the amount of blood moving through a body area of the entire cardiovascular system in a given amount of time. |
vasoconstriction | contraction of smooth muscle of the blood vessel |
vasodilation | relaxation of smooth muscle of the blood vessel |
laminar flow | free flowing blood in the middle of the vessel |
pressue gradient | the flow rate of a blood through a vein is directly proportionatal to the difference between the pressures at teh two ends of the vein. |
preload | the degree to which the ventricles are stretched by the end diastolic volume |
contractility | strength of the cardiac muscle contraction. |
afterload | the back pressure generated by the blood in the aorta and the pulmonary trunk. |
atherosclerosis | plaques in the arteries |