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Unformatted text preview: our skeletal muscles. The autonomic nervous system of the peripheral nervous system is a dual self-regulating system that influences the glands and muscles of our internal organs. The sympathetic nervous system arouses; the parasympathetic nervous system calms. Reflexes, our automatic responses to stimuli, illustrate the spinal cord's work. A simple reflex pathway is composed of a single sensory neuron and a single motor neuron, which often communicate through an interneuron. For example, when our fingers touch a hot stove, information from the skin receptors travels inward via a sensory neuron to a spinal cord interneuron, which sends a signal outward to the arm muscles via a motor neuron. Because this reflex involves only the spinal cord, we jerk our hand away before the brain creates an experience of pain....
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This note was uploaded on 12/04/2011 for the course PSY 2012 taught by Professor Scheff during the Fall '08 term at Broward College.
- Fall '08