The vomeronasal organ (Jacobson organ) is a tiny paired pit or duct on the lower front part of the nasal septum. In many animals it detects pheromones, but in adult humans it is a small vestigial structure.
| Location | Anterior nasal septum, near the vomer and septal cartilage, about 2 cm from the nostril |
|---|---|
| Parts |
|
| Nerve Supply | Nasopalatine nerve region (no functional sensory neurons in adult humans) |
| Blood Supply | Septal branches of the sphenopalatine and superior labial arteries |
Probably non-functional in adults; important for pheromone detection in other mammals.
It can be seen in some people on close nasal examination and may be mistaken for a small septal abnormality. Most evidence suggests humans lack working vomeronasal receptor neurons.
A rare small cyst on the anterior nasal septum.
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