Term
| Purpose of circulatory system |
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Definition
| maintain proper volume, composition,and temperature of interstitial fluid |
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Term
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Definition
| deliver O2 and nutrients to cells, remove CO2, and other waste products |
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Term
| 3 components of CV system |
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Definition
| heart pump, vessels, blood |
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Term
| What occurs in open circulatory system? |
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Definition
| blood leaves the vasculature and mixes with interstitial fluid, then re enters thorugh openings in pumps or vessels |
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Term
| What happens in closed circulatory systems? |
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Definition
| blood stays in vessels but fluid and molecules can leave and return due to pressure |
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Term
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Definition
| transport O2, CO2, nutrients, solutes, wastes, hormones, immune cells and helps regulate pH and temp |
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Term
| What is blood composed of |
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Definition
| plasma 50-60% of volume, cellular components 40-50% of volume |
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Term
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Definition
| water, proteins, ions, sugars, lipids, amino acids, hormones, vitamins, dissolved genes |
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Term
| What is the cellular portion made of? |
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Definition
| white blood cells, neutrophils, lymphocytes, monocytes, eosinophils, basophils, red blood cells, platelets |
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Term
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Definition
| reduced production or blood loss |
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Term
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Definition
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Term
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Definition
| lysis of RBC from bactiera or protists |
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Term
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Definition
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Term
| sickle cell or thalessemias (globbin affected) |
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Definition
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Term
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Definition
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Term
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Definition
| increased WBC production (cancer) |
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Term
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Definition
| type A has antibodies to type B markers, AB has neither A nor B markers; O has both A and B antibodies |
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Term
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Definition
Rh+ people have the Rh marker
Rh- people will make Abs against Rh+ if exposed |
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Term
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Definition
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Term
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Definition
intima (endothelium)
media (smooth muscle)
adventitia (mostly CT) |
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Term
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Definition
carry ox blood mostly
hihg pressure, little resistance, smooth out pulse of heart (systolic vs distolic presure)
adventitia contains symp nerves to reg. flow |
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Term
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Definition
less smooth muscle and elastin fibers
low pressure, return detox blood, have valves |
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Term
| what is capillaries composed of ? |
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Definition
| single layer of epithelium (endothelium) with a basement membrane |
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Term
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Definition
| endothelial cells joined by tight junctions and clefts (can pull apart and increase permeability) |
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Term
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Definition
| have small holes or fenestrations that allow more/rapid movement of small particles |
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Term
| what is pressured in blood pressure |
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Definition
| arterial pressures in large vessels |
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Term
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Definition
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Term
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Definition
too much blood (kidneys not ridding or excess salt)
too much squeezing (Angiotensin, NE, etc)
most times cause is unknown (often genetic)
treat with diurectics, ACE inhibitors, Ca++ blockers |
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Term
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Definition
| between atria and ventricles |
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Term
| chordae tendiane and attahed where |
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Definition
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Term
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Definition
| contract to prevent prolapse of valves |
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Term
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Definition
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Term
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Definition
| prevent blood reentering heart from aorta or pulmonarty artery |
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Term
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Definition
| valve does not properly prevent reflux |
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Term
| cause of valvular insufficiency |
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Definition
| from rheymatic fever (autoimmune disease in whihc bacterial targeted Abs also attacked valves) |
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Term
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Definition
| the mitral/left AV/bicupspid valve prolapses into atrum upon ventricular contraction (may fatigue) |
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