is secreted by the anterior pituitary gland which can stimulate the dispersal of melanin granules in melanophores in the skin of vertebrates which leads to the darkening of skin.

MELANOCYTE-STIMULATING HORMONE (MSH): "MSH stimulates the release of melanin granules by triggering an impulse from the pituitary gland."
Cite this page: N., Pam M.S., "MELANOCYTE-STIMULATING HORMONE (MSH)," in, April 7, 2013, (accessed October 27, 2020).