Anatomy and Physiology HAP101 Chapter Notes - Chapter 15: Otic Ganglion, Pterygopalatine Ganglion, Renal Plexus
16 Nov 2016
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Lo 15. 1: compare the sympathetic and parasympathetic divisions of the ans. Includes both sensory and motor neurons: sensory neurons convey input from receptors for somatic senses (tactile, thermal, pain, and proprioceptive sensations) and from receptors for the special senses (sight, hearing, taste, smell, and equilibrium). These neurons are consciously perceived: motor neurons innervate skeletal muscles and produce both reflexive and voluntary movements. When this type of neuron stimulates the muscle, it contracts; the effect always is excitation. If the neurons cease to stimulate a muscle, the result is a paralyzed, limp muscle that has no muscle tone. Main input to the ans comes from autonomic (visceral) sensory neurons. These neurons are associated with interoceptors, which are sensory receptors located in blood vessels, visceral organs, muscles, and the ns that monitor conditions in the internal environment. Input that influences the ans also includes some sensations monitored by somatic sensory and special sensory neurons.
