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PMI Blood Vessels
Term | Definition |
---|---|
arteries | carries blood away from the heart, blood is oxygenated |
veins | carries blood towards the heart, has valves |
arterioles | smallest artery |
capillaries | microscopic, allows materials to move via diffusion |
venules | small veins |
lumen | hollow space in which blood flows |
endothelium | inner lining of lumen |
vasoconstriction | the tightening of blood vessels |
blood pressure | contraction of the heart ventricles, highest in aorta |
sphygomomanometer | device used to measure blood pressure |
pulse | alternate expansion and recoil of artery after contraction and relaxation of ventricles |
tachycardia | heart beat is over 100 beats per minute |
bradycardia | heart beat is lower than 60 beats per minute |
systolic blood pressure | the pushing against arterial walls during ventricular contraction |
diastolic | the second sound due to ventricular relaxation |
systemic circulation | movement of blood throughout body, leaving the heart |
inferior vena cava | largest vein that carries blood from inferior regions of the body |
ANP | released by cells in the atria of the heart |
coronary sinus | main vein of the heart that receives all the blood of the myocardium |