KINESIOL 1Y03 Lecture Notes - Lecture 11: Central Nervous System, Peripheral Nervous System, Spinal Nerve

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Functions of the nervous system: (gather information from the environment, internally and externally) Sensory: sense changes through sensory receptors (gather information and sends it to the nervous system) lots of sensory information is filtered out. Motor: respond to stimuli (determines what will be done with the stimuli) motor response also sends information to glands. Integrative: analyze incoming sensory information, store some aspects, and make decisions regarding appropriate behaviors. Components: brain, spinal cord, nerves, sensory receptors. Subdivisions: central nervous system (cns): brain and spinal cord, peripheral nervous system (pns): sensory receptors and nerves. If they originate or terminate at a certain region they will be called that type of nerves (example: spinal nerves) Divisions of pns: sensory (afferent): transmits action potentials from sensory receptors to cns (always enters through the dorsal root, motor (efferent): transmits action potentials form cns to effectors (muscles, glands) (always leaves through the ventricle root)

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