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III. Identify what is described in each number. Choose the correct answer from the box. Letters only.
A. nose B. trachea C. alveoli D. pharynx E. larynx
F. cilia G. mouth H. diaphragm I. nostrils

___ 16. It is also called the windpipe.
___ 17. Two openings of the nose.
___ 18. A muscle located at the bottom of the lungs.
___ 19. Passage way for both air and food.
___ 20. Tiny air sacs inside the lungs where the exchange of gases actually happens.
___ 21. It is a pair of opening on the face where air enters.
___ 22. Tiny hairs inside the nose.
___ 23. It is also called the voice box
___ 24. It is the secondary opening of the face where air also enters.

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