MediHealth
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Vein
Updated: Nov 17, 2009 - 16:30Veins are tube-shaped blood vessels. They carry blood back towards your heart from the capillaries in the rest of your body. The blood in veins contains no oxygen (it is deoxygenated), because it has dropped it off at its destinations in your body. When you have Injections, they are often given i...
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Vertebra
Updated: Nov 17, 2009 - 16:30Vertebrae are the 33 small bones that make up your spine. There are seven cervical vertebrae at your neck, 12 thoracic vertebrae at your chest, five lumbar vertebrae at your stomach and five sacral vertebrae at your bum (the lumbar and sacral vertebrae are fused). Finally, there are four ...
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Villi and microvilli
Updated: Nov 17, 2009 - 16:30Villi and microvilli are tiny structures that cover the walls of your small intestines and they look like fingers! They make the surface area of your small intestines bigger and maximise the absorption of nutrients from food into your bloodstream. ...
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Virus
Updated: Nov 17, 2009 - 16:30A virus is a germ that can cause infections like chicken pox and measles. Each virus particle contains a recipe for making copies of itself. Viruses have keys that can line up with the lock on the surface of your cells, and if there is a match, the key opens the lock and the virus enters the...
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Von Willebrand Disease
Updated: Nov 17, 2009 - 16:30Von Willebrand disease (VWD) is a problem with bleeding that you get from your parents, and both boys and girls can get it. Normally, when you bleed, a protein called von Willebrand factor helps your platelets stick together to form a clot. But, if you have VWD, you either have low levels of this...
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