* Pancreas: Part of both the digestive system (producing enzymes for digestion) and the endocrine system (producing hormones like insulin and glucagon).
* Liver: Part of the digestive system (filtering blood from the digestive tract) and the excretory system (removing waste products).
* Skin: Part of the integumentary system (protection, temperature regulation) and the immune system (first line of defense against pathogens).
* Lungs: Part of the respiratory system (gas exchange) and the circulatory system (delivering oxygen to the blood).
* Kidneys: Part of the urinary system (filtering blood and producing urine) and the endocrine system (producing hormones like erythropoietin).
Let me know if you'd like more examples!