KAAP309 Chapter Notes - Chapter 11: Central Nervous System, Resting Potential, Myelin
21 Mar 2017
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Sensory input: monitors changes occurring inside & outside. Integration ns processes & interprets sensory input decides what should be done at each moment. Motor output generates response at effector organs: Central nervous system (cns): control center of ns. Interprets sensory input dictates motor response based on: reflexes, current conditions, past experiences. Peripheral nervous system (pns): ns outside of cns. Contains: nerves bundles of axons that extend: brain spinal cord, spinal nerves: impulses to & from spinal cord, cranial nerves: impulses to & from brain. Communication lines that link cns with all parts of body. Sensory/afferent division of pns: keeps cns constantly informed of internal. & external environments: nerve fibers axons send impulse: sensory receptors cns, somatic sensory fibers send impulses from: Joints: visceral sensory fibers: impulses from visceral organs. Motor/efferent division of pns: nerve fibers send impulses: cns effector organs in order to generate motor response, somatic ns, voluntary division of motor division of pns allows conscious control of muscles.
