MCQ
The function of tracheal hair is to:
- APass mucus out
- BPass mucus in
- CPass air out
- DPass air in
Explanation:
The innermost layer of trachea consists of ciliated pseudostratified columnar epithelium cells. On the surface of the columnar cells, long, hair-like cilia beat together to push mucus away from the lungs. It is expelled out during coughing.
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| $(A)$ Kreb's cycle | $(i)$ Stalked particles of mitochondria |
| $(B)$ Photorespiration | $(ii)$ Cytoplasm |
| $(C)$ Oxidative | $(iii)$ Peroxisomesphosphorylation |
| $(D)$ Glycolysis | $(iv)$ Inner surface of membrane of mitochondria |
$A \ \ B\ \ C \ \ D$