Question: what are the three components of gastric juice quizlet?
Answer: gastric juice substances. Pepsin. ...  pepsin. Enzyme; digests proteins. hydrochloric acid. Denatures proteins; decreases pH (for optimum pepsin function. intrinsic factor. protects and allows later absorption of vitamin B12. mucus. lubricates chyme; protects stomach lining. water. ...  salivary amylase. ...  salivary lipase.