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.
Crawfish - also known as crayfish or crawdads - are small, ten-legged crustaceans found in bodies of water across the U.S.A. and other countries. Catching them is a fun family activity that can be done using fishing poles, special traps, or even your bare hands!