Biology - Human Body Systems - Respiratory system - The Path of Air

6-step air pathway. Step 1: 'NOSE/MOUTH - Air enters. Nose hairs and mucus filter dust and germs. Air is warmed and moistened.' Step 2: 'TRACHEA (Windpipe) - A tube reinforced with C-shaped cartilage rings (keeps it open!). Lined with cilia that sweep mucus and trapped particles upward.' Step 3: 'BR

Edodovivmagarwal
Biology - Human Body Systems - Respiratory system - The Path of Air
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Biology - Human Body Systems - Respiratory system - The Path of Air

vivmagarwal
vivmagarwalJan 29, 2026

Description

6-step air pathway. Step 1: 'NOSE/MOUTH - Air enters. Nose hairs and mucus filter dust and germs. Air is warmed and moistened.' Step 2: 'TRACHEA (Windpipe) - A tube reinforced with C-shaped cartilage rings (keeps it open!). Lined with cilia that sweep mucus and trapped particles upward.' Step 3: 'BR

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BiologyHuman Body SystemsStage 7, Class 7, Class 7, MYP Grade 7, Grade 7

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