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.
Chemical digestion. The most important function of physical digestion is to increase the surface area of the food you eat. This makes it easier for enzymes to act on the large insoluble food molecules and break them down into small soluble ones.An enzyme is a protein molecule.Each type of enzyme catalyses a particular reaction or type of reaction.nzymes in the digestive system speed up the breakdown of the food. Enzymes are made in many places along the digestive system. 1  Carbohydrases-enzymes which break down carbohydrates into simple sugars. 2  Proteases-enzymes which break down proteins, ending up with amino acids.