ANAT 214 Lecture 16: ANAT214 peritoneum dev and foregut innervation
10 Dec 2016
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Foregut structures 3d organization: coeliac artery/nodes/ganglia, omentum. Innervation of gut: splanchnic nerves, vagus, hypogastric, celiac ganglion, superior/inferior mesenteric ganglia. Pelvic splanchnic is parasympathetic, all other are sympathetic. Vagus to intestine: parasympathetic: ganglia are in the organ, function: peristalsis, secretion. Least: no ganglion, but synapses on diffuse cells in plexus. Because these arise from thoracic, they pass thru crura of diaphragm: lumbar, sacral splanchnic. L1-l4 ganglia origin inferior mesenteric ganglia hindgut. Meets inferior mesentery at hindgut then branches out. Descending colon, sigmoid colon, rectum, pelvic viscera (hindgut) Vagus provides parasympathetic innervation to all other places. Thyroid migrates down from gut from cecum: anomalous cecum: clinical issue. Sometimes there"s tissue from cecum to thyroid, or they didn"t move down properly, so the foramen is indistinct. Tongue detail: lingual papillae = taste buds, lingual tonsils are on root of tongue, have lingual nodules. Tonsils detail: palatoglossal and palatopharyngeal arches contain muscles with same name.
