The soft blood-forming tissue that fills the cavities of bones and contains fat and immature and mature blood cells, including white blood cells, red blood cells and platelets.
The base of the brain, which is formed by the enlarged top of the spinal cord. This part of the brain directly controls breathing, blood flow and other essential functions.
The optic nerve connects the eye to the brain. It carries the impulses formed by the retina, the nerve layer that lines the back of the eye and senses light and creates impulses. ...
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