Biology - Chemical Coordination and Integration Question with Solution | TestHub
How many of the following statements are INCORRECT?
(A). Intestinal mucose produces hormones like secretin, cholecystokinin (CCK) and gastric inhibiting peptide.
(B). Secretin stimulates secretion of gastric juice.
(C). Secretin stimulates secretion of bile juice from the liver, pancreatic juice and intestinal juice.
(D). GIP promotes gastric secretion.
Options:
Answer:
Solution:
Statement (A) is correct as the intestinal mucosa secretes hormones like secretin, cholecystokinin (CCK), and gastric inhibitory peptide (GIP).
Statement (B) is incorrect because gastrin stimulates the secretion of gastric juice, whereas secretin inhibits gastric secretion and motility.
Statement (C) is incorrect because secretin acts on the exocrine pancreas and stimulates the secretion of water and bicarbonate ions. It is CCK that acts on the pancreas and gall bladder to stimulate the secretion of pancreatic enzymes and bile juice, respectively.
Statement (D) is incorrect because GIP (Gastric Inhibitory Peptide) inhibits gastric secretion and motility, rather than promoting it.
Therefore, three statements, (B), (C), and (D), are incorrect.
Answer: Three
