In Order for a Molecule to Be Detected by the Olfactory

Question

In order for a molecule to be detected by the olfactory neurons, it must
A) be present in high concentrations.
B) be one of the seven primary classes of odors.
C) be dissolved in fluid covering the olfactory epithelium.
D) interact with the mechanoreceptors of the olfactory hair membrane.
E) enter the nose slowly.

Accepted Answer

For a molecule to be detected by olfactory neurons, it must first dissolve in the mucus that covers the olfactory epithelium. This allows the molecule to interact with the olfactory receptors on the cilia of the olfactory neurons, initiating the signal transduction pathway that leads to the perception of smell.