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Question

Which of the following statements are true/false ?
I. Calcitonin regulates the metabolism of calcium
II. Oxytocin stimulates contraction of uterine muscles during birth
III. Grave's disease is caused by malfunctioning of adrenal gland.
IV. ADH stimulates absorption of water and increase the urine production.

A
I and III are true, II and IV are false
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B
I and II are true, III and IV are false
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C
I and III are false, II and IV are true
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D
I, II and III are true, IV only false
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Solution

The correct option is B I and II are true, III and IV are false
Calcitonin is a hormone that is secreted by the thyroid gland and in the regulation of calcium metabolism.
Oxytocin is secreted by the posterior lobe of the pitutary gland and it stimulates secretion of milk from mammary glands and causes the contractions of the uterus at the time of childbirth.
Grave's disease is caused by the hypersecretion of the hormones by the thyroid gland.
Vasopressin or antidiuretic hormone (ADH), secreted by the posterior lobe of the pitutary gland, stimulates the reabsorption of water in the nephrons and thus increase the concentration of urine and reduces water loss.


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