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SUR 102 cardiology

Terms in this set (59)

vein
A blood vessel that carries blood back to the heart.
artery
A blood vessel that carries blood away from the heart
atrium
Each of the two upper chambers of the heart that receives blood that comes into the heart
Ventricles
the two lower chambers of the heart, and they pump blood out to the lungs and body.
pulmonary artery
Carries deoxygentated blood from the heart to the lungs
pulmonary veins
carry the oxygenated blood from the lungs into the left atrium of the heart
mitral valve
valve between the left atrium and the left ventricle; bicuspid valve
tricuspid valve
A valve that is situated at the opening of the right atrium of the heart into the right ventricle and that resembles the mitral valve in structure but consists of three triangular membranous flaps.
SA node (sinoatrial node)
pacemaker of the heart (SA = Starts it All)
AV node (atrioventricular node)
region of the heart between the right atrium and right ventricle from which electrical impulses spread to the ventricles during a heartbeat
Purkinje fibers
fibers in the ventricles that transmit impulses to the right and left ventricles, causing them to contract
Bundle of His
a bundle of modified heart muscle that transmits the cardiac impulse from the atrioventricular node to the ventricles causing them to contract
Cardiac Output (CO)
Amount of blood pumped in 1 minute (~5 L)
SVR (systemic vascular resistance)
A measure of the amount of resistance
which the vascular bed offers to the flow of
blood.
systolic pressure
The blood pressure generated by the heart during contraction.
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