The pancreas contributes to digestion in addition to hormone production; this places it in which system?

• A. Digestive system
• B. Lymphatic system
• C. Immune system
• D. Integumentary system

Answer: (A)

Pancreas supports digestion by secreting digestive enzymes and bicarbonate into the small intestine. This exocrine role directly aids breaking down nutrients, which is a defining function of the digestive system. Although it also produces hormones like insulin and glucagon as part of its endocrine activity, the key point for system classification is its contribution to digestion. The other options—lymphatic and immune systems, or the skin-related integumentary system—do not center on producing and delivering digestive enzymes into the gut. Therefore, the pancreas is part of the digestive system.