NUR 324 Lecture Notes - Lecture 10: Ileocecal Valve, Common Bile Duct, Pylorus
5 Jun 2019
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Gi function: assessment considers both mental and physical factors, subject to, circulatory disturbances, faulty nervous system control & aging, extrinsic factors: stress, anxiety, fatigue, dietary changes. From the mouth to the anus- 7. 9 meters: esophagus- hollow muscular tube, passes through diaphragm: diaphragmatic hiatus, stomach- hollow muscular organ; capacity 1500 ml. Stores food, secretes digestive fluids, propels chyme to small intestine. Inlet is the gastroesophageal junction: 4 regions: cardia (entrance), fundus, body, pyloris (outlet, pyloric sphincter: circular smooth muscle- controls opening to small intestine. Ileocecal valve (sphincter) controls flow into cecum of large intestine & prevents backflow of bacteria into the small intestine: appendix- attached at cecum; little/no function- ? r/t immune system. Large intestine: 3 segments: ascending, transverse & descending, terminal portion: sigmoid colon, rectum & anus, aanal sphincter regulates anal outlet, receives blood supply from thoracic and abdominal aorta, arterial blood flow. From thoracic and aorta: gastric artery: supplies o2 & nutrients to stomach.
