Question

Duodenum has characteristic Brunner's gland which secrete two hormones called

• A. kinase, estrogen
• B. secretin, cholecystokinin
• C. prolactin, parathormone
• D. estradiol, progesterone.

Answer 1

The Correct Option is B

The question asks about the hormones secreted by Brunner's glands located in the duodenum of the small intestine. Let's analyze the options provided and understand the correct answer.

1. Brunner's Glands:
   • These are compound tubular submucosal glands found in the duodenum.
   • The primary function of Brunner's glands is to secrete alkaline mucus to neutralize the acidic chyme from the stomach and provide an alkaline environment for intestinal enzymes to function.
   • Additionally, they are involved in secreting hormones like secretin and cholecystokinin.
2. Analysis of Options:
   • Kinase, Estrogen: These are not related to Brunner's glands. Kinases are enzymes that modify other proteins by chemically adding phosphate groups, and estrogen is a steroid hormone.
   • Secretin, Cholecystokinin: These hormones are indeed associated with the duodenum and play roles in digestion. Secretin stimulates the pancreas to release bicarbonate and water, whereas cholecystokinin stimulates the gallbladder to contract and release bile.
   • Prolactin, Parathormone: Prolactin is a hormone related to breast milk production, and parathormone is involved in calcium regulation. Neither is related to Brunner's glands.
   • Estradiol, Progesterone: These are steroid hormones involved in the menstrual cycle and pregnancy, not connected with Brunner's glands.
3. Conclusion: The correct answer is secretin, cholecystokinin, as these hormones are directly associated with the function of the duodenum where Brunner's glands are found.