For instance, when food leaves the stomach and enters the small intestine the pancreas is suddenly galvanized into activity and pours its digestive secretion into the duodenum.

The two physiologists knew that the stomach contents were acid because of the presence of considerable hydrochloric acid in the stomach's digestive secretions.

Other hormones that affect the flow of a particular digestive secretion one way or another have been reported as being produced by the stomach or small intestine.

Researchers believe its compounds stimulate digestive secretions, improve intestinal muscle tone, and help move food through the gastrointestinal tract.

Once inside, the prey will be dissolved by digestive secretions.

The uppermost part of the leaf is flared into a lid (the operculum), which prevents excess rain from entering the pitcher and diluting the digestive secretions within.

'On the other hand, the animal's early detection and subsequent evident guilt may well have diminished or even arrested his digestive secretions.'

Their maxillae are hollow, and inject a digestive secretion into the prey.

Peristalsis (contractions) is also at work in this organ, moving food through and mixing it up with digestive secretions.

A typical member of this class has a stylet, a calcareous barb, with which the animal stabs the prey many times to inject toxins and digestive secretions.