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7 Cards in this Set
- Front
- Back
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Vagus (CN X)
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Origin – cranialnerve from brainstem
Course – enterssuperior mediastinum and gives rise to recurrent laryngeal nerve, continues tothe abdomen Distribution –Pulmonary Plexus, Esophageal Plexus, Cardiac Plexus |
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Phrenic
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Origin – C3-5Nerves (Converges)
Course – passes through superior thoracic aperture and runs between mediastinal pleura andpericardium Distribution –central portion of the diaphragm |
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Intercostals(1-11)
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Origin – anterior rami of T1-11 (separate)
Course – run in the intercostal spaces between internal and innermost layers of intercostalmuscles Distribution –muscles in the skin over intercostal space; lower nerve supply muscles and skinof anterolateral abdominal wall |
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Subcostal |
Origin – anterior rami of T12
Course – follows inferior boarder of 12th rib and passes into abdominal wall Distribution – abdominalwall and skin of gluteal wall |
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Recurrent Laryngeal |
Origin – vagus nerve Course – on right, loops around subclavian artery; on left loops around the arch of aorta and ascends in the trachea-esophageal groove Distribution –intrinsic muscles of the larynx, sensory inferior to the level of the vocal cords |
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Pulmonary Plexus |
Origin – vagus nerve and sympathetic trunk Course – forms the root of lung and extends along bronchial subdivisons Distribution –parasympathetic fibers constrict bronchioles sympathetic dilates them |
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Esophageal Plexus |
Origin – vagusnerve, sympathetic ganglia and greater splanchnic nerve
Course – distalto bifurcation, vagus, and sympathetic nerves form the plexus around esophagus Distribution –vagal and sympathetic fibers to smooth muscle and glands of inferior two thirdsof esophagus |
