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.