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Chapter14PeripheralNSMarieb - Ch 14 Peripheral Nervous...

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Sensory Receptors Motor Endings Cranial Nerves The Four Plexuses Extremities Ch 14: Peripheral Nervous System Developed by John Gallagher, MS, DVM
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Review of Reflexes Fast, preprogrammed, inborn, automatic responses Occur in the CNS at the spinal cord or brainstem levels May be either monosynaptic or polysynaptic All require a. stimulus at receptor b. sensory information relay c. processing at CNS level d. activation of motor response e. response of peripheral effector Fig 14.2
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Peripheral Sensory Receptors Classified by Location Exteroceptors Interoceptors Proprioceptors Stimulus Thermoreceptors, etc. Structure Pacincian corpuscle Adaptive abilities
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Peripheral Sensory Receptors, cont’d Free Nerve Endings Prominent in epithelia Pain and Temperature Light touch (Merkel’s discs)
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