Gastrovasucular Cavities: Digestive sacs with single openings that function in both the digestion and distribution of nutrients
throughout the body.
Bolus: Food that is shaped into a ball to help it go through the digestive track.
Peristalis: rhythmic waves of contraction by the smooth muscles and helps push the food along the tract.
Enterochromaffin cells: Any of several types of hormone-secreting cells present throughout the epithelium of the digestive
tract that often stain readily with silver or chromium salts
Salivary glands: A gland that secretes saliva, especially any of three pairs of large glands, the parotid, submaxillary,
and sublingual, whose secretions enter the mouth and mingle in saliva.
Pancreas: A long, irregularly shaped gland in vertebrates, lying behind the stomach, that secretes pancreatic juice into
the duodenum and insulin, glucagon, and somatostatin into the bloodstream.