HTHSCI 1H06 Lecture Notes - Lecture 15: Myenteric Plexus, Curvatures Of The Stomach, Celiac Artery
9 Apr 2018
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Sto(cid:373)ach: the (cid:862)basic(cid:863) plan, layers and their function, mucosal layer: epithelium, lamina propria - connective tissue, muscularis mucosa - smooth muscle. Submucosal layer: blood vessels, submucosal glands: muscularis layer: inner circular, outer longitudinal - to create peristalsis, adventitia/serosa: mesothelium, thin connective tissue, "glues in place, enteric nervous system. Functions without input from sympathetic system: main function: to control peristalsis, 100+ million neurons present, 2 components, myenteric plexus - associated with muscular portion of stomach. Space between organs and wall - potential space. Lubricating fluid present: covers small intestine and meets abdominal wall again (suspending it - mesentery) Inside intraperitoneal space for protection: thinner than parietal peritoneum. Mesocolon: double peritoneal fold, gets blood vessels to wall of small intestine. From inferior surface of diaphragm to lobes of the liver. Suspends the liver: touches anterior abdominal wall as well. Omentum: extends between inferior surface of liver and stomach. Starts from greater curvature of stomach, comes back to transverse colon.
