vomeronasal organ

(redirected from Jacobson organ)
Also found in: Medical.
Related to Jacobson organ: Flehmen response

vo·mer·o·na·sal organ

Either of two olfactory sense organs, found near the vomer in certain amphibians, reptiles, and mammals, that detect pheromones and other chemical compounds. In humans, these organs regress during fetal development. Also called Jacobson's organ.
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