The hypothalamus contains special cells called neurosecretory cellsâneurons that secrete hormones: 1  Thyrotropin-releasing hormone (TRH) 2  Growth hormone-releasing hormone (GHRH) 3  Growth hormone-inhibiting hormone (GHIH) 4  Gonadotropin-releasing hormone (GnRH) 5  Corticotropin-releasing hormone (CRH) 6  Oxytocin. 7  Antidiuretic hormone (ADH)
Meaning: Platform for a lookout at or near the top of a mast. Classified under: Nouns denoting man-made objects. Hypernyms (crow's nest is a kind of...): platform (a raised horizontal surface) Holonyms (crow's nest is a part of...): ship (a vessel that carries passengers or freight)
The crow genus makes up a third of the species in the family Corvidae. The members appear to have evolved in Asia from the corvid stock, which had evolved in Australia. The collective name for a group of crows is a 'flock' or a 'murder'. The genus name is Latin for raven. Recent research has found some crow species capable of not only tool use, but also tool construction.