In terms of Brodmann areas, the prefrontal cortex traditionally includes areas 8, 9, 10, 11, 44, 45, 46, and 47 (to complicate matters, not all of these areas are strictly granularâ44 is dysgranular, caudal 11 and orbital 47 are agranular).
A starfish's mouth is on the center of its bottom side. Its stomach  is directly behind the mouth after a short esophagus and extends a  bit down its five arms.
The stomach is a muscular, J-shaped organ in the abdomen. Part of the digestive system, the stomach stores and digests food through gastric juices and a specialized churning action created by folds on its inside. Read More.