Why does the passage of polypeptides and small proteins across the intestinal wall is uncommon in adults?
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- Why is the small intestine well adapted for nutrient absorption? a) Acid secretions from the stomach are neutralized in the duodenum b) CCK is released from the duodenum to promote liver and pancreatic secretion c) Large surface area due to the presence of the plicae circulars, villi, and microvilli d) The small intestine is very long and thina) What is the general function of all enzymes that are involved in the digestive process.b) Use the Table below to summarise the function of 6 named digestive enzymes that are either secreted from specific regions of the gastrointestinal system, or part of the intestinal brush border. Enzyme Site of secretion / Action Function (to include substrate and product formed)What is the functional value of the microvilli in the absorptive cells of the small intestine?
- Blockage of the bile duct would be expected to affect Multiple Choice a) cellulose digestion. b) protein digestion. c) carbohydrate digestion. d) lipid digestion. e) nucleotide digestion.E) Vital Capacity (VC) The volume of air in the lungs after a forceful exhalation is the A) Total Lung Capacity (TLC) B) Vital Capacity (VC) C) Residual Volume (RV) E) Expiratory Reserve Volume (ERV)Why is it important that chyme from the stomach is delivered to the small intestine slowly and in small amounts?
- Why are villi present in the intestine and not in the stomach?How does gastrointestinal tract evade dehydration? 1) Alternating wave-like contraction and relaxatio of the oral (mouth) muscles reabsorbs water which will be transported to the urinary system 2) water is an important digestive enzyme in the stomach. 3) Normal peristaltic movements in the large intestine ensure reabsorption of water that will be delivered to the circulatory system. 4) the water we drink will be mostly absord by the blood vessels attached to the esophagus and stomach. Skip questionAll of the following statements concerning this region of the small intestine are true, EXCEPT for . . . Chooe one from the following: (A) This region of the small intestine is the 2nd longest region (B) Peyer's patches are located in the submucosa of this region of the small intestine (C) This region of the small intestine is classified as intraperitoneal (D) Branches of the superior mesenteric artery supplying this region of the small intestine demonstrate multiple levels of arcades (E) Most of the nutrients available to the body after digestive hydrolysis are absorbed across the wall of this region of the small intestine
- What is the function of the ileocecal sphincter and valve?Zollinger-Ellison syndrome is a peptic ulcer disease characterized by overproduction of gastric acid. Which two types of stomach cells are most likely involved in Zollinger-Ellison Syndrome?where are replacement cells produced that prevent the lining of the small intestine from, being lost as the cells die in this very hostile environment?
