Question

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12. The type of propulsion that occurs due to toxin or obstruction in the alimentary canal is A) segmentation. B) ingestion. C) deglutition. D) emesis. E) defecation. 13. The is the second segment of the small intestine. A) jejunum B) ceacum C) ileum D) duodenum E) hepatic flexure 14. Each anatomical structure is correctly located EXCEPT: A) palatine tonsils - oropharynx B) rugae - stomach C) plicae circularis - colon D) appendix - ceacum E) pylorus - stomach 15 Which of the following is a correct association A) Cholecystokinin has a stimulatory effect on small intestine motility and gastric secretions B) Secretin has a stimulatory effect on chief cells in gastric mucosa C) Somatostatin has a stimulatory effect on protein digestion D) Gastrin has a stimulatory effect on stomach functions E) None of the above are correct F) A and D are correct 16 Lipids can not be absorbed by the intestinal mucosa unless first acted on by A) pancreatic enzyme nucleases B) bile from the gall bladder C) intrinsic factor from the duodenum D) lipases from the gastric mucosa E) acid pH gastric secretions 17 Bilirubin is derived from A) hemoglobin. B) albumin. C) hepatocytes. D) cholesterol. E) all of the above

Answer 1

Ans-12. D. emesis

Emesis is avt of vomiting which is substances from stomach are ejected out due to any obstruction in digestion or toxicity like food poisoning or gastritis may be.

Ans-13. A. jejunum

Small intestine is divided into three parts which are first duodenum, second jejunum and third ileum.

Ans-14. C. plicae circularis

These are numerous circular folds of mucous membranes found in small intestine specially in lower part of duodenum and jejunum.

Ans-15. D. gastrin has stimulatory effect on stomach functions

Gastrin is a hormone produced by G cells in the lining of stomach and upper small intestine. During a meal gastrin stimulates stomach to release gastric acid which allows breaks down food.

Ans-16. B. bile from gall bladder

First lipids are acted upon by bile which contains bile salts, which acts as emulsifier of lipids. This breaks lipids into smaller droplets.

Ans-17. E. all of the above

Majority of bilirubin is derived from the breakdown of hemoglobin. While it can be derived from hepatocytes, marrow cells, spleen, cholestrol and albumin.