Human Respiratory System

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Human Respiratory System by Mind Map: Human Respiratory System

1. Organs

1.1. lungs

1.2. Heart

1.3. Windpipe

1.4. Nostrils

2. Nose

2.1. Allows air to enter body

3. Transport air to lungs

3.1. Windpipe and its branches

4. Diaphragm

4.1. Relaxs/contracts to make chest bigger or smaller