All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...

P.J. Answer: An MRI is a much more sensitive test than a CT scan for looking at the brain structure and its blood vessels. The back part of the brain, called the posterior fossa, contains the ...

All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...