I. WHAT HAPPENED Activity 1: System vs. Functions Matching Type. Match Column A with column B, by writing the LETTER of your answer on the space provided. Column A 1. Reproductive system 2. Circulatory system 3. Digestive system 4. Excretory system 5. Nervous system 6. Skeletal system 7. Muscular system 8. Respiratory system 9. Endocrine system 10. Integumentary system Column B A. Supports the body B. Removes excess water and waste C. Transports oxygen and nutrients D. For locomotion E. For coordination F. Regulates body function G. Produces egg and sperm cells H. Barrier from harmful microorganisms I. For oxygen and carbon dioxide exchange J. For absorption of nutrients​