Organ - System - FunctionNose - Respiratory System - Takes in air and filters dustLungs - Respiratory System - Gas exchange (oxygen in, carbon dioxide out)Trachea - Respiratory System - Carries air to and from the lungsDiaphragm - Respiratory System - Helps lungs expand and contractHeart - Circulatory System - Pumps blood throughout the bodyArteries - Circulatory System - Carry oxygen-rich blood away from the heartVeins - Circulatory System - Carry blood back to the heartCapillaries -Circulatory System - Site of exchange of gases and nutrients