Respiratory system - Moves air into and out of the lungs to control gas exchange, Digestive system - Digests and absorbs nutrients from food, removes waste and maintains water balance, Circulatory system - Transports nutrients, waste, hormones and gases around the body, Skeletal system - Protects and supports the body and organs, enables movement and makes blood cells, Nervous system - Regulate behaviour and responses to the environment, Endocrine system - Regulates and maintains homeostasis by the secretion of hormones,

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