Identify the correct statements.

a) PTH increases the ${\mathrm{Ca}}^{2+}$ levels in the blood.

b) Thymus gland secretes thyroxine hormone.

c) Adrenal medulla secretes cortisol.

d) Cortisol stimulates lipolysis.

Choose the correct answer from options given below.

PTH is hypercalcemic hormone and thus increases the ${\mathrm{Ca}}^{2+}$ levels in the blood.

Thymus gland secretes thymosins which play a vital role in immune responses.

Adrenal medulla secretes catecholamines.

Cortisol is secreted by adrenal cortex and stimulates lipolysis, proteolysis and gluconeogenesis.