The brain
The brain has three main parts. The cerebrum, two hemispheres with a folded outer layer (the cortex), takes in what the senses report, thinks, speaks, remembers and sends orders to the muscles; each hemisphere runs the opposite side of the body, and the cortex has four lobes (frontal, parietal, temporal, occipital). The cerebellum, under the back of the cerebrum, keeps the body balanced. The brain stem joins them to the spinal cord, and its lowest part, the medulla, runs breathing, the heartbeat and blood pressure.
Depth 1 · Foundation
You can name the cerebrum with its two hemispheres and four lobes, the cerebellum and the brain stem, say what each does, and know that each hemisphere controls the opposite side of the body.
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You can name the cerebrum with its two hemispheres and four lobes, the cerebellum and the brain stem, say what each does, and know that each hemisphere controls the opposite side of the body.
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