Question

Match the hormones with their secretory sites:

Hormone	Secretory site
A. Melatonin	I. Endocrine cells
B. ANF	II. Pineal Gland
C. Erythropoietin	III. Atrial wall of heart
D. CCK	IV. Juxtaglomerular cells

• A. A-III, B-II, C-IV, D-I
• B. A-II, B-III, C-I, D-IV
• C. A-II, B-I, C-IV, D-III
• D. A-II, B-III, C-IV, D-I

Answer 1

The correct option is D A-II, B-III, C-IV, D-I

Melatonin is secreted by pineal gland. It plays a very important role in the regulation of a 24-hour (diurnal) rhythm of our body.

Atrial natriuretic factor(ANF) is secreted by the atrial wall of our heart. It causes dilation of the blood vessels which reduces the blood pressure.

The juxtaglomerular cells of kidney produce a peptide hormone called erythropoietin which stimulates erythropoiesis (formation of RBC).

Cholecystokinin(CCK) is secreted by endocrine cells of the gastro-intestinal tract. CCK acts on both pancreas and gall bladder and stimulates the secretion of pancreatic enzymes and bile juice, respectively.