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28 Cards in this Set
- Front
- Back
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Artery |
Blood away from heart |
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Vein |
Blood to the heart |
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Name the 2 layer of a BV |
Tunica Intima, Tunica Media & Tunica Externa |
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Tunica Intima |
Inner- endothelial tissue |
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Tunica Media |
Middle- smooth muscle |
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Tunica Externa/Adventita |
Outer- connective tissue |
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Elastic arteries |
Stretch when ventricles pump, decreased blood pressure
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Muscular Arteries |
Vasoconstriction and Vasodialation |
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Arterioles |
Control amount of blood reaching capillaries |
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Starting with elastic arteries trace the blood through the vessels to the large veins |
Elastic arties, Muscular arteries, Arterioles, Capillaries, Venules, Small Veins, Large Veins |
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What is the location and function of the precapillary sphincter? |
Smooth muscle cells Origin of capillaries and channels/arterioles Regulate blood flow into capillaries |
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What is the function of valves in veins? |
Prevent backflow |
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Varicose Veins |
Permanently dialated veins- do not prevent backflow of blood |
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Vasoconstriction |
Contraction of smooth muscle in blood vessel- decrease BV diameter and blood flow |
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Vasodialation |
Relaxation of smooth muscle in blood vessel- increase BV diameter and blood flow |
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Arteriosclerosis |
Los of elasticity in aorta |
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Atherosclerosis |
Deposition of materials into arterial walls to form plaques |
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Korotkoff sounds |
Vibrations in the blood and surrounding tissues that can be heard though stethascope |
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Sphygmomanometer |
Blood pressure machine thing |
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Hypertention |
High blood pressure |
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Hypotension |
Low blood pressure |
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Pulpe pressure |
Difference between systolic and diastolic pressure |
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Venoconstriction |
Vein constriction |
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Define Blood pressure. Describe how systolic an diastolic can be measured, |
-Measure of force blood exterted against vessel walls -Sys=first noise -Dia=last noise heart |
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What happens to blood flow if you increase the blood viscosity? |
As viscosity increases, the pressure required for blood increases |
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Define vasomotor tone |
The continual sympathetic stimulation of smooth muscle in walls of blood vessel that keeps them in a state of partial constriction |
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What causes renin to be released from the kidneys? |
Reduce blood flow |
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What are baroreceptors and what are their function? |
Sensory receptors that respond to stretch in arteries caused by increased blood pressure |
