3 ms·
It's both. The light-sensitive supraoptic part of your brain directly triggers your hypothalamums to release more or less corticotropin-releasing hormone. Which
by Khelavaster 4y ago
It's both. The light-sensitive supraoptic part of your brain directly triggers your hypothalamums to release more or less corticotropin-releasing hormone. Which directly triggers adrenocorticotropic hormone+melanocyte [melanin cell] stimulating hormone.