The sense of smell is sparked when the molecules of a substance enter the nasal passages and meet ___________ cells,the receptor neurons of the nose,which are spread across the nasal cavity.
A)olfactory
B)hair
C)odor
D)gustatory

Question

Quizplus · Accepted Answer

Olfaction permits us to detect more than 10,000 separate smells.The molecules of a substance must enter the nasal passage and be detected.

The Sense of Smell Is Sparked When the Molecules of a Substance