OC - Ghleanna

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The human body is a complex system that is capable of performing a wide range of functions. It is made up of many different systems that work together to keep us alive and healthy. The circulatory system, for example, pumps blood throughout the body, supplying oxygen and nutrients to our cells and organs. The respiratory system brings oxygen into the body and removes carbon dioxide, while the digestive system breaks down food into nutrients that can be absorbed by the body. The nervous system controls all of the body's functions, including movement, sensation, and thought. It is made up of the brain and spinal cord, which work together to send signals throughout the body. The human body is also capable of healing itself from injuries and diseases. The immune system produces antibodies that fight off infections, while the skin helps to protect us from harm.