Question

Assertion: Growth and thyroxine hormone are known as lipolytic hormone.
Reason: Cellular utilisation and uptake of free fatty acid are increased by these hormones.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct and Reason is not the correct explanation for Assertion.
C. Assertion is correct but Reason is incorrect.
D. Both Assertion and Reason are incorrect.

Answer 1

Hint: Growth hormone is also known as somatotropin. It stimulates growth, cell regeneration and reproduction in humans and animals. It is secreted by the pituitary gland. Thyroxine is secreted by the thyroid gland. It is responsible for regulating the metabolism.

Complete Answer:
To solve this question, we must know about the function of growth hormone and thyroxine in the lysis of lipids.
- Lipolysis means breaking the lipid molecule is hydrolysed into fatty acids and glycerols. This is stored in the adiposities.
- Growth hormone: It is a peptide hormone which is secreted by the pituitary. The GH acts on the adipose tissues and increases lipolysis. This releases free fatty acid in the blood which is utilised by the humans.
- Thyroxine: It regulates both the synthesis and breakdown of lipids. The function of thyroxine is it enhances the utilisation of lipids, increases the synthesis and mobilisation of triglycerides in the adipose tissues. It also increases the concentration of lipoprotein- lipase. Thus assertion is true.
- These hormones help in storing the free fatty acid in the adipose tissues. Thus the reason is incorrect.

Hence, the correct answer is (C).

Note: Growth hormone is responsible for the growth during childhood. The growth slows down in the middle age. The main function of thyroxine is regulation of growth and development. Hyper secretion of these growth hormones leads to adverse effects on the body.