Circulatory System - Transports oxygen and nutrients to tissues, removes waste products, Digestive System - Processes food, absorption of nutrients into body, Endocrine System - Regulates body functions by using hormones, Integumentary System - Barrier to invading pathogens, temperature control, Muscular System - Movement and heat production, Nervous System - Coordinates/Directs activities of other organ systems, responds to sensations , Urinary System - Elimination of wastes, regulates pH, Respiratory System - Oxygen/carbon dioxide exchange, Skeletal System  - Supports and moves body, protects internal organs, mineral storage, blood formation,

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