9 cartilages among them 3 are paired and 3 are unpaired occurs in

Pharynx

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Larynx

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Glottis

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Bronchial tube

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Solution

The correct option is B Larynx
The larynx (voice box) is a cartilaginous box which helps in sound production.
It consists of 9 cartilages among them 3 are paired and 3 are unpaired.
Vocal cords are composed of twin infoldings of mucous membrane stretched horizontally across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.
Hence vocal cords occur in Larynx.
So, the correct answer is 'Larynx'.

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which one of the following is true regarding the cartilages of the larynx

1. 3 paired and 3 unpaired

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4. 2 unpaired and 2 paired

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