When a male cat smells the urine of a female cat, he may exhibit the flehmen response, a behavior in which he curls back his upper lip and breathes in deeply.Olfactory molecules from the urine travel in nasal fluid over chemoreceptors of the _______, which is a structure located on the septum dividing the two nostrils.

Question

Quizplus · Accepted Answer

The structure located on the septum dividing the two nostrils that is responsible for the flehmen response is the vomeronasal organ (VNO). It contains chemoreceptors that detect pheromones, including those found in urine. The other options listed are not involved in olfactory processing or the detection of pheromones.

When a Male Cat Smells the Urine of a Female