Term
|
Definition
-carry blood away from ventricles of heart
-red
-1 |
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Term
|
Definition
-receive blood from arteries
-carry blood to capillaries
-2 |
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Term
|
Definition
-sites of exchange of substances between blood and body cells
-3 |
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Term
|
Definition
-receive blood from capillaries
-less smooth muscle and elastic tissue than arteriole
-thinner wall than arteriole
-4 |
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Term
|
Definition
-carry blood toward ventricle of heart
-some have flaplike valves
-carries blood under relatively low pressure
-serves as blood reservoir
-blue
-5 |
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Term
|
Definition
-endothelium (smooth)
-inside layer of walls |
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Term
|
Definition
-smooth muscle
-some elastic fibers
-middle layer of walls |
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Term
|
Definition
-connective tissue
-outside layer of walls |
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Term
| Smallest arterioles have what? |
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Definition
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Term
| Arteriole capillaries lack what? |
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Definition
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Term
| Precapillary sphincter is what |
|
Definition
| A ring of muscle surrounding a blood vessel at the junction between an arteriole and capillary that may close the capillary |
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Term
| Smallest diameter blood vessel |
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Definition
|
|
Term
| What are capillary walls made of? |
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Definition
|
|
Term
| Why are capillaries semi-permeable? |
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Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
-Continuous
-Fenestrated
-Discontinuous (Sinusoids) |
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Term
|
Definition
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Term
|
Definition
| In the kidneys (semi-loose) |
|
|
Term
| Discontinuous capillaries |
|
Definition
-Sinusoids
-big holes that allow bacteria in/out
-In the liver and spleen |
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|
Term
| What regulates capillary blood flow? |
|
Definition
|
|
Term
| Precapillary sphincters respond to what? |
|
Definition
|
|
Term
| Precapillary sphincters have low what? |
|
Definition
| Oxygen and nutrients that cause it to relax |
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Term
| What happens if arterial pressure drops? |
|
Definition
| The sympathetic system kicks in, causes veins to constrict, increasing the amount of blood that goes back to the heart |
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Term
|
Definition
| Forces the blood exerts against the inner walls of the blood vessels |
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|
Term
| What does arterial blood pressure do? |
|
Definition
-rises when ventricles contract
-falls when ventricles relax |
|
|
Term
| What is systolic pressure? |
|
Definition
| maximum pressure - during ventricular systole |
|
|
Term
| What is diastolic pressure? |
|
Definition
| minimum pressure – during ventricular diastole |
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Term
|
Definition
| alternate expanding and recoiling of the arterial wall that can be felt |
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|
Term
| What is the radial pulse do? |
|
Definition
| equal to the rate at which the left ventricle contracts – can be used to measure heart rate |
|
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Term
|
Definition
| volume of blood discharged during 1 ventricular contraction – about 70mL |
|
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Term
|
Definition
| volume from 1 ventricle in a minute |
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Term
|
Definition
| resistance to blood flow caused by the friction between the blood and blood vessels |
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|
Term
| 2 ways to control blood pressure |
|
Definition
| control cardiac output or peripheral resistance |
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|
Term
| Venous blood flow is dependent on what? |
|
Definition
-skeletal muscle contraction
-breathing
-venoconstriction |
|
|
Term
|
Definition
-Not a direct result of heart action
-Toward the heart |
|
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Term
|
Definition
-Bulge in a blood vessel – can be deadly if ruptured
-Weak spot in blood vessels |
|
|
Term
| Where are aneurysms normally located? |
|
Definition
-Aorta
-Thoracic (heart)
-Abdominal
-Brain
-base of the brain |
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Term
|
Definition
-catheter into femoral artery, Pt coil
-Aneurysm treatment |
|
|
Term
|
Definition
-craniotomy, clips applied
-Aneurysm treatment |
|
|
Term
| What is a stroke caused by? |
|
Definition
| -a clot in the brain – usually a cerebral artery |
|
|
Term
|
Definition
-transient ischemic attack
–“mini stroke”
–5-50 minutes |
|
|
Term
| What do strokes usually cause? |
|
Definition
-Paralysis
-Speech difficulty
-Sensory deficit
-Need for physical therapy |
|
|
Term
| What does tissue plasminogen activator do? |
|
Definition
| Dissolves blood clots in the brain from strokes |
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Term
|
Definition
-Twisted veins
-Spider veins |
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|
Term
| What causes varicose veins? |
|
Definition
-Age (veins stretch, valves flap)
-Pregnancy (increased blood volume, decreased blood flow to legs, pressure from uterus) |
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|
Term
| What is sclerotherapy treatment for varicose veins? |
|
Definition
| injection to collapse veins |
|
|
Term
| What is laser treatment for varicose veins? |
|
Definition
|
|
Term
| How can a varicose vein be removed? |
|
Definition
|
|
Term
|
Definition
-Varicose veins
-Internal, external, or combo. |
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|
Term
| What are symptoms of hemorroids? |
|
Definition
-Bleeding
-Itching
-Inflammation and swelling
-Seepage |
|
|
Term
|
Definition
-Hemorrhoid symptom
-lump or clot
-may cause gangrene |
|
|
Term
| What is rubberband ligation? |
|
Definition
| Treatment for hemorrhoids using rubberbands |
|
|
Term
| What is Galvanic treatment? |
|
Definition
| -electrocuting the hemorrhoid |
|
|
Term
| What is surgical excision? |
|
Definition
| -The Hemorrhoidal Circular Stapler |
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