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vomeronasal organ (VNO)
tubular structure in the nasal septum that is connected to the nasal cavity by a small duct
detects pheromones
removal or severing connection to brain → interferes with pheromone effects but not with general odor sensing
found in most amphibians, reptiles, and mammals
pheromone
a chemical substance produced and released into the environment by an animal, affecting the behavior or physiology of others of its species
pheromone v. odorant
MANY odorants, few pheromones
different pathways and receptors
Human VNO
may have one that varies in size and shape
humans may be able to detect pheromones with main olfactory bulb
