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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 |