Victims recalled smelling “mown grass” while in the subway. Which of the followi

Question

Victims recalled smelling “mown grass” while in the subway. Which of the following statements best describes the region of the nasal cavity involved in the sense of smell?

a. Olfactory mucosa is found throughout the nasal cavity.

b. Olfactory mucosa is found covering the inferior nasal conchae and is composed of ciliated pseudostratified epithelium.

c. Olfactory mucosa is found covering the floor of the nasal cavity and is composed of simple squamous epithelium

d. Olfactory mucosa is found in the roof of the nasal cavity in close proximity to the cribiform plate and the olfactory bulbs.

Explanation / Answer

D. Olfactory mucosa is found in the roof of the nasal cavity in close proximity to the cribriform plate and olfactory bulbs.

It is structurally modified to detect odor producing chemicals. The olfactory mucosa contain

a. Olfactory receptors: These are specialized nerve cell receptores protrude in to nasal cavity from the surface of mucosal epithelium.

b. Cilia

c. Supporting cells or sustentacular cells

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