Question

Above the uppermost concha, is the

• A. Vestibule
• B. Olfactory bulb
• C. Conchae
• D. Turbinates

Answer 1

The correct option is B Olfactory bulb

Above the uppermost concha, is the olfactory bulb. It processes information about odours.
The entire nasal cavity is lined by a moist mucous membrane supplied with a large number of blood vessels.
The mucous membrane also has fine hair-like projections called the cilia which collect any debris entering the nasal cavity.
Apart from the cilia, the mucous membrane also has several cells. Some of these cells are called as secretory cells. Secretory cells secrete a thick, viscous fluid called as the mucous.