
| Part | Description |
| nostrils ⇩ |
the external holes/openings of the nose to the air around us |
| nasal cavity ⇩ |
space inside the nose which is covered
with mucus; the place where air is warmed up before it travels to the lungs |
| trachea ⇩ |
also
known as the windpipe; divides into two bronchi; has cilia and mucus to trap dust and microorganisms in the air |
| bronchus (plural: bronchi) ⇩ |
the main
passageway (from the trachea) to the lungs; bronchi branch off into smaller bronchioles |
| bronchiole ⇩ |
the small branches of passageways connecting the bronchi to the alveoli |
| alveolus (plural: alveoli) |
found at the end of bronchioles; the part of the lungs where gaseous exchange takes place |

| Bahagian | Huraian |
| lubang hidung ⇩ |
pembukaan luar hidung (ke udara di sekeliling kita) |
| rongga hidung ⇩ |
ruang di dalam
hidung yang diselaputi mukus / lendir; tempat di mana udara dipanaskan sebelum mengalir ke peparu |
| trakea ⇩ |
saluran
berbentuk paip yang bercabang menjadi dua bronku; silia dan mukus / lendir di dalam trakea memerangkap debu dan mikroorganisma di dalam udara |
| bronkus ⇩ |
cabang atau saluran utama dari trakea ke peparu |
| bronkiol ⇩ |
salur-salur / cabang-cabang kecil yang menyambungkan bronkus kepada alveolus |
| alveolus | terdapat pada hujung bronkiol; bahagian di mana pertukaran gas berlaku |