M

figure 49-5

The central nervous system includes the brain and spinal cord, shown in orange. The peripheral nervous system, shown in violet, includes all other nervous tissue in the body.

figure 49-6

(a) A view of the top of the brain shows the left and right cerebral hemispheres.

(b) Each cerebral hemisphere of the brain has four lobes. Control centers for various functions are located in different areas of the brain.

(a) TOP VIEW OF BRAIN

Frontal lobe

Parietal lobe

Occipital lobe

Left Right hemisphere hemisphere

(b) SIDE VIEW OF BRAIN (Left hemisphere)

Motor function

Intellectual function

Speech

(b) SIDE VIEW OF BRAIN (Left hemisphere)

Parietal

Smell

Motor function

Parietal

Sensory function

Intellectual function

Speech

Smell

Vision

Balance and coordination

Hearing

Cerebellum

Sensory function

Occipital lobe

Vision

Balance and coordination

Hearing

Cerebellum

Cerebrum

Thalamus

Midbrain

Pons

Medulla oblongata

Cerebellum

Corpus callosum

Thalamus

Diencephalon —

Hypothalamus.

Midbrain

Pons

Medulla figure 49-7

oblongata

A side view through the center of the brain shows the right hemisphere. The convoluted cerebral cortex is visible along the front, rear, and top of the brain, where it folds into the deep groove separating the two hemispheres. The structures lying below the cerebrum are shown in cross section.

Cerebellum

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