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Anatomy & Physiology of Nose

Question
21 out of 33
 

Nasal valve is formed by: (LQ)



A Upper lateral cartilage

B Lower lateral cartilage

C Lower end of upper lateral cartilage

D Upper end of lower lateral cartilage

Ans. C Lower end of upper lateral cartilage

Nasal valves. (A) External nasal valve area (bounded by pyriform notch of maxilla and upper and lower lateral cartilages); (B) Internal nasal valve (inset) is bounded by septum, inferior edge of lower lateral cartilage, and anterior aspect of inferior turbinate Coutesy: Textbook of Diseases of Ear, Nose and Throat, Mohan Bansal. Jaypee Brothers, p 287 )

Anterior Nasal Valve/lnternal Nasal Valve

This is the narrowest part of nose and is less well defined physiologically than anatomically.

It is formed by the lower edge of the upper lateral cartilages, the anterior end of the inferior turbinate and the adjacent septum together with the surrounding soft tissues.

Note

To check the potency of nasal valve Cottle's test is done in conditions like DNS.

Anatomy & Physiology of Nose Flashcard List

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