Question
Biology Question on Human Endocrine System
MSH is secreted by
A
anterior lobe of pituitary
B
middle lobe of pituitary
C
posterior lobe of pituitary
D
endostyle.
Answer
middle lobe of pituitary
Explanation
Solution
Middle lobe of pituitary secretes a hormone named melanocyte-stimulating hormone. It stimulates the synthesis of black pigment melanin in the skin, and also causes dispersal of melanin granules in the pigment cells, thereby darkening the colour in certain animals (fishes; amphibians). In man it has no such role. Anterior lobe of pituitary secretes FSH, LH, TSH, ACTH and STH. Posterior lobe of pituitary secretes oxytocin and vasopressin.