BIOL 1082 Lecture Notes - Lecture 24: Cell Membrane, Sympathetic Nervous System, Somatic Nervous System

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19 Sep 2017
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Gray matter contains a relatively high proportion of neuron cell bodies. White matter includes all of the nerves of the pns and much of the interior of the brain and spinal cord, and in the cortical layers that line their surfaces. The cns has various centers that integrate all the sensory and motor information in the body. The lower centers include the spinal cord and brain stem carry out essential body and organ-control functions and higher centers control more sophisticated information processing including out thoughts and perceptions. Peripheral nervous system (pns): vast network of nerves consisting of bundles of axons that link the body to the brain and the spinal cord. Sensory nerves of the pns contain sensory receptors that detect changes in the internal and external environment. Following info. processing in the cns, signals are relayed back to the pns by way of efferent peripheral nerves.

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