Select the correct matching of a hormone, its source and function.
- array|l|l|l| Hormone & Source & Function \ Vasopressin & Posterior pituitary & Increases loss of \ & & water through urine \ array
- array|l|l|l| Hormone & Source & Function \ Norepinephrine & Adrenal medulla & Increases heart beat, \ & & rate of respiration and \ & & alertness \ array
- array|l|l|l| Hormone & Source & Function \ Glucagon & Beta-cells of Islets of & Stimulates glycogenolysis \ & Langerhans & \ array
- array|l|l|l| Hormone & Source & Function \ Prolactin & Posterior pituitary & Regulates growth \ & & of mammary glands \ & & and milk formation in \ & & females \ array
Answer
(2) array|l|l|l| Hormone & Source & Function \ Norepinephrine & Adrenal medulla & Increases heart beat, \ & & rate of respiration and \ & & alertness \ array
Solution
As per NCERT, the adrenal medulla secretes adrenaline (epinephrine) and noradrenaline (norepinephrine), the emergency hormones; they increase alertness, heart beat, the strength of heart contraction and the rate of respiration. ⇒ Option (2) is correct.
⇒ Vasopressin (ADH) stimulates reabsorption of water in the distal tubules and so reduces loss of water through urine. Option (1) is wrong.
⇒ Glucagon is secreted by the α-cells (not β-cells) of the islets of Langerhans. Option (3) is wrong.
⇒ Prolactin is secreted by the anterior (not posterior) pituitary. Option (4) is wrong.
Answer: (2)