Anonymous asked in 科學及數學生物學 · 7 years ago

Biology Question! Fast !!!

Some cells in the trachea and large airways secret a sticky liquid called mucus.

Mucus traps particles of dirt or bacteria that are breathed in . The cilia beat

forwards and backwards , sweeping the mucus and trapped particles out towards

the mouth.



So is sputum produced by the trachea and large airways?

2 Answers

  • ?
    Lv 6
    7 years ago
    Favorite Answer

    mucus is not totally equal to sputum since most mucus is swallowed and only for those undesirably coughed out we will refer to as sputum.

  • Anonymous
    7 years ago

    code PLUS where do you get the informations?

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