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Unformatted text preview: • CNIX (Glossopharyngeal): o Origin: Inferior Salivatory Nucleus o Controls: Salivary Glands • CNX (Vagus): o Origin: Nucleus Ambiguus; Dorsal Motor Nucleus of the Vagus (DMV) o Controls: Heart; Lungs; Liver; Intestine & others • S2-S4: o Origin: Lateral horn of Spinal cord o Controls: Genitals; Rectum; Urinary System Sympathetic & Parasympathetic nervous systems act synergistically Afferents to ANS • Considerable afferent system to the ANS • Visceral afferents arise from o Thermoreceptors (e.g. in skin) o Mechanoreceptors (gut wall, bladder wall & blood vessels) o Chemoreceptors (carotid bodies) o Pain receptors (responding to stretch or anoxia) • Ascend bilaterally in distinct multisynaptic pathways • Sensation poorly localised, except in the need for urination & defaecation • General rule: o Afferents involved in reflex control travel in PNS o Pain afferents travel in SNS...
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.
- Fall '10