GIT - Physiology MCQ ACEM, Top Exam Review Questions & Answers, Rated A+

GIT - Physiology MCQ ACEM, Top Exam Review Questions & Answers, Rated A+ Which of the following statements is CORRECT in relation to gastric emptying? 1. Occurs in approximately 2 hours 2. Depends on osmotic pressure of materials in the duodenum 3. Is slowed down with metoclopramide 4. Is independent of pH in the duodenum 2. Depends on osmotic pressure of materials in the duodenum "Depends on osmotic pressure of materials in the duodenum" - Ganong 24th ed. Gastric emptying occurs in approximately 2hrs. (this may be incorrect according to some sources). It starts with /icarbohydrates/i, and THEN /iproteins/i FOLLOWED by ifats./i bNB!:/B If the question reads "Depends on the iosmotic pressure in the duodenum/i" - then the answer is incorrect. The rate of emptying also depends on the osmotic pressure of the materials entering the duodenum. ihyperosmolality/i of the duodenal contents is sensed by the duodenal osmoreceptors that initiate a idecrease in gastric emptying./i - Ganong 24th ed Metoclopramide is a prokinetic. Gastric emptying is dependent on the alkaline pH in duodenum. Acidic pH delays gastric emptying. Regarding bile composition, which of the following substances makes up the largest proportion? A. Bile pigments B. Bile salts C. Lecithin D. Cholesterol Water makes up the greatest composition-97% - bile salts-0.7% - bile pigments-0.2% - cholesterol 0.06% - lecithin 0.1% The pH of pancrea