Ralph Hutchings

Image 53 of 74
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Lateral view of the human brain showing the cerebrum and cerebellum. The cerebrum is the largest part of the brain and it governs higher brain functions including thought. The cerebellum is involved with balance and control of the muscles. The brain contains more than 300 billion neurons and is composed mainly of gray matter which originates and processes nerve impulses and white matter which transmits the impulses.