How many kilometers of blood vessels are in your body? If they could be laid end to end, the blood vessels would cover a distance of about 60,000 miles (96,500 kilometers).
there are 123212324.8
pia matter
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The cells lining the brain's tiny blood vessels (capillaries) are specifically designed to prevent many substances from passing into brain tissue.
While the brain does not contain blood cells in the same way as blood vessels or circulating blood, it does have microglial cells that act as the immune cells of the central nervous system. These cells can help defend the brain against infections and remove cellular debris.
2 major blood vessels
Yes. In fact, such is the brain's demand for oxygen that it requires 20% of your total oxygen supply. This explains why it is served by so many blood vessels.
approximately 1 mile
The brain itself does not contain blood; however, it receives blood supply through a network of blood vessels. The amount of blood in the brain can vary depending on factors such as blood pressure and metabolic rate, but on average, the brain receives about 15-20% of the total cardiac output, which is roughly 750-1000 mL of blood per minute.
Blood vessels can form new blood vessels, this is called angiogenesis.
Why are nephrons surrounded by many tiny blood vessels