About Arteriovenous Malformation (AVM)
- Basic Blood Vessel Anatomy of the Brain
- Overview of an AVM
- Symptoms
- AVMs in Children
- AVMs and Pregnancy
- Quick Facts
- References
An artery is a blood vessel that carries blood that is high in oxygen and nutrients from the heart to nourish other parts of the body. The walls of an artery are very elastic as they are meant to withstand high pressure as blood is pumped out of the heart. The arteries gradually become smaller and smaller as they get out to the tissues until reaching the capillary bed, which consists of tiny, thin-walled vessels, where oxygen and nutrients exchange with carbon dioxide and waste products.
The blood then continues into the veins, blood vessels that carry blood back to the heart. Normally, as the high-pressure arterial blood is pumped through a capillary bed there is a gradual decrease in blood pressure. The walls of veins are therefore not as elastic as arteries as they are not meant to carry blood under high pressure.
In the brain, the veins drain blood into venous dural sinuses (not to be confused with the air-filled sinuses in the facial bones that are often associated with sinus infections, etc.). Venous dural sinuses are folds in the dura mater (lining of the brain) that collect blood and then drain into the internal jugular veins that bring blood back to the heart...
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That is a link to a AVM site... I recommend you go give them a view.
Me.... Not much.
been youtubeing... alot of new UFO's posted... big deal.
but that won't stop me from posting one or three...
okay it kinda sense ...
don't forget 12-21-2010
the end?
okay now this is getting silly.
or...
I know that book gas 0 to do with the end of times... See you next whatever... bye bye.
