The vomeronasal cartilage (or Jacobson's cartilage) is a narrow strip of cartilage

Cartilage

Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the elbow, the knee, the ankle, the bronchial tubes and the intervertebral discs...

, low on the medial wall of the nasal cavity. It lies between the cartilaginous nasal septum

Nasal septum

The nasal septum separates the left and right airways in the nose, dividing the two nostrils.It is depressed by the Depressor septi nasi muscle.-Composition:The fleshy external end of the nasal septum is sometimes also called columella....

 and the vomer

Vomer

The vomer is one of the unpaired facial bones of the skull. It is located in the midsagittal line, and articulates with the sphenoid, the ethmoid, the left and right palatine bones, and the left and right maxillary bones.-Biology:...

. The cartilage lies below, but is not connected to, the rudimentary vomeronasal organ of Jacobson.

Ludwig Levin Jacobson (1783–1843), a Danish anatomist, named this structure in 1809.