Ques. 1AIPMT 2004
Duodenum, which has characteristic Brunner's glands, secretes two hormones called
- kinase, estrogen
- secretin, cholecystokinin
- prolactin, parathormone
- estradiol, progesterone.
Answer
(2) secretin, cholecystokinin
Solution
As per NCERT, cells in different parts of the gastrointestinal tract secrete four major peptide hormones: gastrin, secretin, cholecystokinin (CCK) and gastric inhibitory peptide (GIP).
Secretin acts on the exocrine pancreas and stimulates secretion of water and bicarbonate ions, while CCK acts on both pancreas and gall bladder and stimulates secretion of pancreatic enzymes and bile juice.
Both are secreted by the duodenal mucosa (the Brunner's glands themselves secrete an alkaline mucus).
∴ The two hormones are secretin and cholecystokinin.
Answer: (2)
Out of syllabus