BLG 600 Study Guide - Midterm Guide: Central Nervous System, Peripheral Nervous System, Spinal Nerve

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24 May 2016
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Functions of the nervous system: maintaining homeostasis- regulate and coordinate physiology, receiving sensory input- monitor internal and external stimuli. 3: controlling muscles and glands, establishing and maintaining mental activity- consciousness, thinking, memory, emotion. Integrating information- brain and spinal cord process sensory input and initiate responses. Composed of the brain, spinal cord, nerves, sensory receptors. Central nervous system (cns): brain and spinal cord, which integrate sensory signal. Peripheral nervous system (pns): sensory receptors and nerves, get sensory signal into. Sensory receptors: ending of neurons or separate, specialized cells that detect such things as temperature, pain, touch, pressure, light, sound, doors. Travel through nerves that take it into the cns. Nerve: a bundle of axons and their sheaths that connects cns to sensory receptors, muscles, and glands. Cranial nerves: nerves that originate from the brain and transmit sensations above the spinal cord; 12 pairs. Spinal nerves: nerves that originate from spinal cord and transmit sensations below the spinal cord; 31 pairs.

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