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.
Answer by 01628773 (140). Crayfish are different from many other aquatic species in that they remove oxygen from air or water using specialized gill chambers. As a result, they can survive for six to seven months out of the water if in a humid environment.