Anxiety does evoke the same fight or flight response that stress does, which means, like stress, anxiety will trigger a flood of stress hormones like cortisol designed to enhance your speed, reflexes, heart rate, and circulation.
The organs produce digestive chemicals (enzymes and acids) that break down the nutrients into simpler forms so that absorption through the intestinal wall and into the blood stream can occur. Mechanical and Chemical Digestion. There are two kinds of digestion: mechanical and chemical.he organs produce digestive chemicals (enzymes and acids) that break down the nutrients into simpler forms so that absorption through the intestinal wall and into the blood stream can occur. Mechanical and Chemical Digestion. There are two kinds of digestion: mechanical and chemical.
Gastric Phase. The gastric phase of digestion begins when food enters the stomach, causing the stomach to extend. The stomach then continues to release the digestive chemicals hydrochloric acid and pepsin, first stimulated in the cephalic phase.tomach chemical secretion ceases once the intestinal phase of digestion begins. This action is initiated by the stretching of the duodenum and the secretion of the hormone enterogastrone.