33:630:363 Lecture Notes - Lecture 3: Central Nervous System, Peripheral Nervous System, Autonomic Nervous System
24 Apr 2020
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Document Summary
The nervous system iii-final: central nervous system (cns) Comprised of the brain and the spinal cord. Coordinates and integrates all voluntary and involuntary nervous functions: peripheral nervous system (pns) Comprised of nerves that carry messages between. Convey nerve impulses from receptors to cns. Convey nerve impulses from cns to effector organs. Convey impulses away from cns to periphery. Efferent neurons (cell bodies in spinal cord: somatic nervous system (voluntary, autonomic nervous system (involuntary) Conduct impulses from cns to visceral organs (smooth muscle, cardiac muscle), glands. Autonomic system innervates internal organs: sympathetic nervous system, parasympathetic nervous system. Efferent neurons of the autonomic nervous system are divided into: Sympathetic nervous system: function involuntarily, innervate all internal organs, sympathetic division: Controls fight or flight responses: parasympathetic division: Internal organs are innervated by both sympathetic and. Electrical signals (action potentials) in the nervous system can be tapped into for treatment: Brainstem/spinal cord- bs = head and neck movement; sc = body movement.
