> wiki  

Jacobson's organ

KidzSearch Safe Wikipedia for Kids.
(Redirected from Vomeronasal organ)
Jump to: navigation, search
Vomeronasal organ
Frontal section of nasal cavities of a human embryo 28 mm. long (Vomeronasal organ of Jacobson labeled at right)
Latin organum vomeronasale
Lymph Node
Precursor Nasal placode

The Jacobson's organ, is part of the body that helps an animal smell things. It is found in many animals. It was discovered by Frederik Ruysch and later by Ludwig Jacobson in 1813.[1] It is also called the vomeronasal organ or VNO.

This body part is mainly used to detect pheromones, chemicals that carry information between individuals of the same species. So, sometimes it is called the "sixth sense."


  1. Jacobson, L. (1813). Anatomisk Beskrivelse over et nyt Organ i Huusdyrenes Næse. Veterinær=Selskapets Skrifter [in Danish] 2,209–246.