PSYC 372 Chapter Notes - Chapter 3: Central Nervous System, Autonomic Nervous System, Peripheral Nervous System

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Textbook notes: the vertebrate nervous system is composed of two divisions. Central nervous system (cns): the division of the nervous system located within the skull and spine: brain, spinal cord, retina of the eye, encased in bone (skull brain; spine vertebrae) Peripheral nervous system (pns): the division located outside the skull and spine: neural circuits outside of the skull and vertebrae, central nervous system (cns) Two divisions: the brain and the spinal cord. It is composed of afferent nerves that carry sensory signals from the skin, skeletal muscles, joints, eyes, ears, etc. to the cns. It is also composed of efferent nerves that carry motor signals from the cns to the skeletal muscles. To remember the difference in these two terms, think of this: words that start with. A, like afferent, associate with going towards something (advance, approach, arrive) while words that start with e, like efferent, associate with going away from something (exit, embark, escape)

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