Why do we have a brain?

Brain - directs and coordinates movements and reflexes, registers sensations and is the supreme nervous organ by which man acquires knowledge and the power to use and adapt it. It shapes our personalities, and without it we would be more helpless than the tiniest human baby. There are three main parts of the brain: the forebrain (or cerebrum), the midbrain and the hindbrain. They have the consistency of soft jelly and are protected by three membranes (meninges), a tough outer envelope called the dura and a watery fluid (cerebrospinal fluid) which acts as a support and a cushion. The brain is connected to the spinal cord, and its surface is highly convoluted.

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