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Chapter 13
Stack #173096
| Question | Answer |
|---|---|
| artery | takes blood away from heart (fast delivery) |
| arteriole | controls the flow into any area (distribution) |
| capillary | tiniest and most important blood vessels, where gas exchange takes place |
| venule | gather blood from capillaries |
| vein | return blood to heart (collect, return, and store blood) |
| tunica adventitia | outermost layer, consists of connective tissue |
| tunica media | middle layer, made up of smooth muscles controlled by the ANS, responsible for vasal dialation and constriction |
| tunica intima | innermost layer, lined with endothelium, smooth muscle, single layer of cells |
| valves | found in veins, blood only flows one way |
| precapillary sphincters | smooth muscle, circular, controls blood flow in capillaries |
| arteriosclerosis | hardening of the arteries due to calcification, blood flow is decreased |
| ischemia | reduced blood flow, causes gradual cell death, can lead to necrosis |
| necrosis | tissue death |
| gangrene | tissue death with bacterial decay |
| angioplasty | a balloon is inflated to open up a partially blocked area |
| plaque | cholesterol deposits |
| aneurysm | weakened area of an artery, it may balloon out, as a result, a clot could form. then becomes an embolusm, can burst with hemmorraging |
| cerebrovascular accident | stroke as a result of a clot, or bursting of an aneurysm |
| varicose veins | loss of elasticity, bulges |
| hemorrhoids | varicose veins in rectum, caused by pregnancy |
| phlebitis | vein inflammation from clots |
| sphygmomanometer | a device to measure blood pressure. consists of a cuff and a gage, uses the brachial artery. |
| hypertension | high blood pressure |
| blood volume | increase in pressure due to blood decreasing the volume of blood. |
| strength of heart contractions | strong pump increases stoke volume, thus raising blood pressure |
| heart rate | the heart rate affects blood pressure |
| blood viscosity | the thickness of blood, an increases causes an increase in blood pressure |
| pulse | the expansion and contraction of an artery |
| circulatory shock | not enough blood flow to bring oxygen to the bodies tissues causing damage or death |
| cardiogenic | heart attack or heart failure due to heart problems |
| hypoyolemic | a loss of blood volume causes a decrease of blood pressure due to hemorrhaging . |
| neurogenic | blood vessels dilate from CNS damage, due to depressive drugs for emotional stress |
| anaphylactic | an allergic reaction like a bee sting that causes vasal dilation |
| septic | bacteria infection releases toxins causing vasal dilation |
Created by:
agentm6586
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