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1 Pumps blood around the body, regulates temperature, water content, and acid-base balance
2 Protects the body from external environment
3 Fertilization and formation of a new life
4 Responsible for oxygen/carbon dioxide gas exchange
5 Involved in the absorption of water and removal of undigested food
6 Organs found in this system includes the pituitary, thyroid, pineal, parathyroid, and adrenal glands
7 Contains bone marrow for blood cells to develop
8 Responsible for transporting various substances
9 The functionality of this system can be split into 3 main stages
10 Maintains posture and plays a role in thermoregulation
11 Helps regulate the production of red blood cells
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