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Human Respiratory System by Mind Map: Human Respiratory System

1. Nose

1.1. Windpipe

1.1.1. Left Lung

1.1.1.1. Air Sacs

1.1.1.1.1. Blood Vessels

1.1.2. Right Lung

1.1.2.1. Air Sacs

1.1.2.1.1. Blood Vessels