Melanin is secreted by

Concentration of skin melanin is controlled by

Concentration of skin melanin is controlled by

Concentration of skin melanin is controlled by

Melanin is the pigment present in

Melanin is the natural pigment that gives colour to human skin, hair and the iris. It provides protection against

Skin pigment melanin is formed from (a) Tyrosine (b) Adrenaline (c) Indole-3-acetic acid (d) Tryptophan

The adrenocorticotrophic hormone secreted by anterior pituitary stimulates the secretion of :

The adrenocorticotrophic hormone secreted by anterior pituitary stimulates the secretion of :

Digestive secretions are secreted only when needed. Discuss.