Vomeronasal Organ (also known as Vomeronasal Organs, Jacobson Organ): An accessory chemoreceptor organ that is separated from the main OLFACTORY MUCOSA. It is situated at the base of nasal septum close to the VOMER and NASAL BONES. It forwards chemical signals (such as PHEROMONES) to the CENTRAL NERVOUS SYSTEM, thus in

NIH MeSH · D019147Anatomy

Vomeronasal Organ

Also known asVomeronasal Organs · Jacobson Organ · Jacobson's Organ · Jacobsons Organ · Organum Vomeronasale · Organum Vomeronasales · Vomeronasale, Organum · Vomeronasal Nerve · Vomeronasal Nerves · Vomeronasal System · Vomeronasal Systems

Definition

An accessory chemoreceptor organ that is separated from the main OLFACTORY MUCOSA. It is situated at the base of nasal septum close to the VOMER and NASAL BONES. It forwards chemical signals (such as PHEROMONES) to the CENTRAL NERVOUS SYSTEM, thus influencing reproductive and social behavior. In humans, most of its structures except the vomeronasal duct undergo regression after birth.

MeSH classification

  • A09.531.940

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Common questions about Vomeronasal Organ

What does Vomeronasal Organ mean in medicine?
An accessory chemoreceptor organ that is separated from the main OLFACTORY MUCOSA. It is situated at the base of nasal septum close to the VOMER and NASAL BONES. It forwards chemical signals (such as PHEROMONES) to the CENTRAL NERVOUS SYSTEM, thus influencing reproductive and social behavior. In humans, most of its structures except the vomeronasal duct undergo regression after birth. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Vomeronasal Organ known by any other names?
Yes. Vomeronasal Organ is also referred to as Vomeronasal Organs, Jacobson Organ, Jacobson's Organ, Jacobsons Organ in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Vomeronasal Organ sit in the medical classification?
Vomeronasal Organ falls under the broader medical category "Anatomy" in the MeSH hierarchy (tree numbers: A09.531.940). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Vomeronasal Organ?
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Source: NIH MeSH 2026 (D019147) — National Library of Medicine, public domain. View official MeSH record ↗