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what body system is the lungs part of what organ system is the lungs part of what human body system are the lungs part of what body system is your lungs a part of what body system is the longest part of what body system is the lungs in what body system is the lungs in a frog what organ system is the lungs apart of what body system is the lungs located in which body system are the lungs part of what is this system's function
