Question

brain is maid up of what substance​

Answer 1

Answer:

The brain is composed of 40% gray and 60% white matter. The gray matter is made up of about 100 billion neurons that gather and transmit signals while the white matter is made of dendrites and axons that the neurons use to transmit signals.

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Answer 2

Answer:

The cerebrum is the largest part of the human brain .it is divided into two cerebral hemispheres. the cerebral cortex in an outer pair of Grey matter,covering the core of white matter. thecortex is split into the neocortex and the much smaller allocortex .

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