Fraction of the population that have a vomeronasal duct (Jacobson's organ)

Range ~60 %
Organism Human Homo sapiens
Reference Landis BN, Hummel T, Lacroix JS. Basic and clinical aspects of olfaction. Adv Tech Stand Neurosurg. 2005 30 :69-105. p.73 2nd paragraphPubMed ID16350453
Primary Source [25] Knecht M et al (2001) Frequency and localization of the putative vomer- onasal organ in humans in relation to age and gender. Laryngoscope 111: 448–452 DOI: 10.1097/00005537-200103000-00013PubMed ID11224774
Comments P.73 2nd paragraph: "Some authors claim to find neuronal activity within the vomeronasal epithelium [ref 23] while many other studies suggest that the vomeronasal duct is nonfunctional in humans, with some vomeronasal nerves missing and lack of accessory olfactory bulbs in adults [refs 24, 26-27, primary source]. Furthermore, a vomeronasal duct is not always present in humans, recent investigations revealed that approximately 60% of humans have one [primary source]."
Entered by Uri M
ID 113596