Gastrin, Histamine, and Cholinoceptors Quiz
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Questions and Answers

What hormone is released from G cells of the antral mucosa by acetylcholine, stretch, and dietary proteins?

Gastrin

What are the common diseases related to gastric acid secretion mentioned in the text?

Dyspepsia / Indigestion, Peptic ulcers (gastric or duodenal ulcers), Gastro-oesophageal reflux disease (GORD), Zollinger-Ellison syndrome, Upper gastrointestinal bleeding in critically ill patients

What are the main functions of the large intestine?

Absorbing water and electrolytes, producing and absorbing vitamins (commensal bacteria), forming and propelling faeces toward the rectum for elimination

What are the two types of drugs mentioned for the inhibition of gastric acid secretion?

<p>Histamine H2 receptor antagonist, proton pump inhibitors (PPIs)</p> Signup and view all the answers

What is the function of alginates in the neutralization of gastric acid?

<p>Raft-forming</p> Signup and view all the answers

What are the three main functions of the duodenum?

<p>Receives partially digested material (chyme) from the stomach, receives bile and pancreatic juice via the Sphincter of Oddi, neutralization of stomach acid</p> Signup and view all the answers

What hormone is responsible for the contraction of the gall bladder and the release of bile into the duodenum?

<p>Cholecystokinin</p> Signup and view all the answers

What is the fate of bile salts in the small intestine?

<p>Bile salts remain in the small intestine and are reused for micelle formation.</p> Signup and view all the answers

What percentage of bile salts are reabsorbed into the enterocytes and the circulation by active transport from the terminal ileum?

<p>95%</p> Signup and view all the answers

What are some common problems associated with the gastrointestinal tract (GIT) related to malabsorption?

<p>Malabsorption, Diarrhoea, Steatorrhoea, Constipation</p> Signup and view all the answers

What are the three specific amino acid transporters responsible for moving amino acids out of the enterocytes?

<p>Facilitated diffusion</p> Signup and view all the answers

What process makes fats available to enzymes at the water/lipid interface?

<p>Emulsification</p> Signup and view all the answers

Where does the absorption of fats mainly occur?

<p>Upper jejunum</p> Signup and view all the answers

What happens to medium-chain fatty acids in the intracellular processing of fats?

<p>Pass directly into the bloodstream</p> Signup and view all the answers

How are long-chain fatty acids and monoglycerides processed in the intracellular processing of fats?

<p>Re-esterified into triglycerides in the endoplasmic reticulum of the enterocyte</p> Signup and view all the answers

What is required for the absorption of vitamin B12 in the stomach?

<p>Intrinsic factor</p> Signup and view all the answers

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