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.
Rate of digestion. Digestion of food involves chemical reactions that break up large food molecules into their âbuilding blockâ components. There are a number of factors that affect the rates of these reactions.We look at how surface area, temperature and pH all influence the rate of digestion of large food molecules.igestion of food involves both mechanical and chemical processes. Through digestion, large food particles are converted into smaller components that can be readily absorbed into the bloodstream. We look at mechanical digestion and the chemical digestion (enzymatic hydrolysis) of carbohydrates, proteins and fats.