question: Digestive enzymes are released, or secreted, by the organs of which body system?
distractor3: endocrine system
distractor1: nervous system
distractor2: urinary system
correct_answer: digestive system
support: Digestive enzymes are released, or secreted, by the organs of the digestive system. These enzymes include proteases that digest proteins, and nucleases that digest nucleic acids. Examples of digestive enzymes are:.