Circulation
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What do capillaries do and what are they composed of? | -Associated with gas, fluid, metabolite, and nutrient exchange
-Composed of endothelial cells, basement membrane, and occasional pericytes
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| Continuous Capillaries | -no interruption of lining
-found in fat, muscle, and nervous system
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| Fenestrated capillaries | -contain pores with diaphragm for high capacity exchange
-found in small intestine, kidney, and endocrine glands
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| Discontinuous capillaries | -large gaps between endothelial cells
-found in sinusoids of liver, bone marrow, and spleen
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| Pericyte | -contractile cells that wrap around the endothelial cells of capillaries and venules throughout the body.
-embedded in basement membrane where they communicate with endothelial cells of the body's smallest blood vessels
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| How do postcapillary venules differ from capillaries? | -Greater diameter and more pericytes than capillaries
-Where white blood cells enter and leave vascular system
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| arteriovenous shunt | -direct connection between arteriole and venule
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| Important functions of epithelium | -Permeability barrier between the blood and tissues
-Make collagen/proteoglycans for basement membrane maintenance
-Control blood flow by regulating the diameter
-Non-adhesive surface
-Adhesion molecules, Interleukins, and Growth Factors
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| What is significant of a Vein with a valve? What is it? | a projection of the tunica intima of the vein wall in veins larger than 2mm, and is composed of fibroelastic tissue.
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| What kind of drainage do lymphatic vessels do? | Passive
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