GI Tract Hormones and Their Functions — NEET Biology
📚 Practice ConceptEndocrine cells present in different parts of the gastro-intestinal tract secrete four major peptide hormones, namely gastrin, secretin, cholecystokinin (CCK) and gastric inhibitory peptide (GIP). Gastrin acts on the gastric glands and stimulates the secretion of hydrochloric acid and pepsinogen. Secretin acts on the exocrine pancreas and stimulates secretion of water and bicarbonate ions. CCK acts on both pancreas and gall bladder and stimulates the secretion of pancreatic enzymes and bile juice, respectively. GIP inhibits gastric secretion and motility. Several other non-endocrine tissues secrete hormones called growth factors. These factors are essential for the normal growth of tissues and their repairing/regeneration.
Match the following hormones with their respective primary functions: Column I (Hormone) A. Gastrin B. Secretin C. Cholecystokinin D. GIP E. ANF F. Erythropoietin Column II (Primary Function) (i) Stimulates erythropoiesis (ii) Inhibits gastric secretion and motility (iii) Stimulates HCl and pepsinogen secretion (iv) Stimulates water and bicarbonate ion secretion (v) Stimulates pancreatic enzymes and bile juice release (vi) Decreases blood pressure through vasodilation Which of the following options gives the correct match?
View solution & NCERT explanation
Correct answer: D — A-(iii), B-(iv), C-(v), D-(ii), E-(vi), F-(i)
The core concept involves matching the specified hormones with their primary functions as described in the NCERT text. Let's match each hormone: A. Gastrin: "Gastrin acts on the gastric glands and stimulates the secretion of hydrochloric acid and pepsinogen." -> (iii) Stimulates HCl and pepsinogen secretion. B. Secretin: "Secretin acts on the exocrine pancreas and stimulates secretion of water and bicarbonate ions." -> (iv) Stimulates water and bicarbonate ion secretion. C. Cholecystokinin (CCK): "CCK acts on both pancreas and gall bladder and stimulates the secretion of pancreatic enzymes and bile juice, respectively." -> (v) Stimulates pancreatic enzymes and bile juice release. D. GIP (Gastric Inhibitory Peptide): "GIP inhibits gastric secretion and motility." -> (ii) Inhibits gastric secretion and motility. E. ANF (Atrial Natriuretic Factor): "atrial natriuretic factor (ANF), which decreases blood pressure. ... causes dilation of the blood vessels." -> (vi) Decreases blood pressure through vasodilation. F. Erythropoietin: "erythropoietin which stimulates erythropoiesis (formation of RBC)." -> (i) Stimulates erythropoiesis. Combining these matches, the correct option is D. Tested concept: Functions of various hormones secreted by the heart, kidney, and gastrointestinal tract.
What does NCERT say about Endocrine cells present different?
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