What are the main functions of the human body system

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• What are the functions of the human body systems
• What are the main functions of each of the human body systems
• What are the main functions of the skeletal system in the human body
• What are the main functions of the digestive system in the human body
• What are the main functions of the respiratory system in the human body
• What are the main functions of the muscular system in the human body
• What are the main functions of the circulatory system in the human body
• What are the functions of each human body system
• What are the 8 system functions of the human body
• What are the eight system functions of the human body
• What are the main functions of the respiratory and circulatory systems in the human body
• What are the main systems of the human body and what are their primary functions