Which of the Following is Least Related to the Olfactory

Question

Which of the following is least related to the olfactory nerve?
A) CN I
B) Impairment: anosmia
C) Motor, causing flaring of the nares
D) Smell

Accepted Answer

The olfactory nerve is responsible for the sense of smell (choice D) and is also known as CN I (choice A). An impairment of the olfactory nerve can cause anosmia (choice B). However, the olfactory nerve is not motor in function, and therefore does not cause flaring of the nares (choice C).