What is Jacobson's organ?

Thiv	Jacobson's Organ - An extrasensory organ in the roof of a snake's mouth, sharpens its sense of smell. Apr 20 00, 10:13 PM

TheAlphaWolf

The Jacobson's organ is the organ at the roof of snakes' mouths that allows them to smell. The tongue picks up smell particles and brushes it along its Jacobson's organ which allows it to smell. Other animals (humans too) have it too but not as developed. That is why when you see a male in mating season making strange faces (turning its upper lip up) it's trying to detect pheromones that the female gives off in order to tell the male that it's in heat. Feb 21 04, 10:29 PM

zbeckabee

The vomeronasal organ (VNO), or Jacobson's organ, is an auxiliary olfactory sense organ that is found in many animals and some adult humans that was discovered by Ludvig Jacobson in 1813. It develops from the nasal (olfactory) placode, at the anterior edge of the neural plate (cranial nerve zero). It is a chemoreceptor organ which is completely separated from the nasal cavity the majority of the time, being enclosed in a separate bony or cartilaginous capsule which opens into the base of the nasal cavity. It is a tubular crescent shape and split into two pairs, separated by the nasal septum. http://en.wikipedia.org/wiki/Jacobson%27s_organ Jan 29 08, 1:28 PM