Multiple choice Which of these is present in human buccal cavity? Ptyalin Trypsin Lipase Pepsin Reveal answer Fill a bubble to check yourself A Correct answer Explanation Ptyalin (salivary amylase) is the digestive enzyme secreted by salivary glands present in the buccal cavity. Trypsin and pepsin are proteases found in the stomach and small intestine, while lipase is primarily pancreatic.