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Anatomy & Physiology of Nose

Question
27 out of 33
 

Ciliary movement rate of nasal mucosa is: (LQ)



A 1-2 mm/min
B 2-5 mm/min

C 5-lO mm/min
D 10-12 mm/min

Ans. C 5 to 10 mm/min

In mucociliary mechanism of nasal mucosa-cilia beat constantly at speed of 5-10 mm/minute and are in contact with serous layer of mucus which entraps the foreign bodies, allergens and carry it to nasopharynx. Beat frequency = 10Hz Movement is metachronus (. all cilia at right angle to the direction of flow are in the direction of flow while those in the direction of flow are slightly out of phase).

Mucociliary clearance time = 5-20 mins.

The pH of mucous blanket of nose is 7.

Anatomy & Physiology of Nose Flashcard List

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