1 The posterior pituitary lobe releases two hormones that are produced in the hypothalamus:  Oxytocin, which is responsible for stimulation of milk ejection (milk letdown) and for stimulation of uterine smooth muscle contraction at birth.
Crayfish and crawfish are crustaceans living in freshwater with a great resemblance of the lobsters. However, their size is smaller compared to the lobsters.
The Procambarus clarkii, also known as Red Swamp Crayfish, Louisiana crawfish, Crawdad are a very hardy species of crayfish. Their natural habitat was originally distributed from northern Mexico to Florida, and north to southern Illinois and Ohio.