WELD 174AB Lecture Notes - Lecture 5: Codeine, Histoplasmosis, Tachycardia

• School: College of The Sequoias
• Department: WELD - Welding
• Course: WELD 174AB
• Professor: Yinjing

Document Summary

The abdomen is lined by a thin layer of membranous tissue: the peritoneum. The is a double lining the parietal peritoneum covers the internal surface of the abdominal walls whilst the visceral peritoneum covers the organs. Between the two layers the peritoneal cavity is a small amount of fluid. Some organs lie behind the peritoneum (i. e. the retroperitoneal structure) on the posterior abdominal wall. They are the pancreas, a portion of the duodenum, the ascending and descending colon and the kidneys. The swallowing process is controlled by the medulla initially and by an autonomous peristaltic reflex coordinated by the ens in the mid- and distal-oesophagus. Divided into three phases: oral, oro- pharyngeal and oesophageal. Dysphagia is the principal symptom of oesophageal disease. Patients can often point to a level although the sensation usually correlates poorly with the actual level of obstruction: onset.