State the function of the following [5]
1. C-shaped cartilages rings in trachea
2. Placenta
3. Cerumen
4. Hypothalamus
5. Micropyle
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The trachea is surrounded by 16-20 rings of hyaline cartilage; these 'rings' are incomplete and C-shaped. Two or more of the cartilages often unite, partially or completely, and they are sometimes bifurcated at their extremities. The rings are generally highly elastic but they may calcify with age.
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Choose from the following the correct match of the two lists. List I (Example), List II (Respiration). A, Earthworm ...
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please mark as brainllist
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