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Pre-copulatory Behaviour - Anatomy & Physiology (view source)
Revision as of 13:58, 3 September 2010
, 13:58, 3 September 2010no edit summary
* Vomeronasal organ is an '''accessory olfactory''' organ.
* Vomeronasal organ is an '''accessory olfactory''' organ.
* Connected to two small openings in the anterior roof of the mouth just behind the upper [[Lips_-_Anatomy_%26_Physiology|lip]].
* Connected to two small openings in the anterior roof of the mouth just behind the upper [[Lips|lip]].
* Fluid-borne, less volatile chemicals enter the vomeronasal organ through the [[Alimentary_-_Anatomy_%26_Physiology#Oral_Cavity|oral cavity]] by means of nasopalatine (incisive) ducts.
* Fluid-borne, less volatile chemicals enter the vomeronasal organ through the [[Alimentary_-_Anatomy_%26_Physiology#Oral_Cavity|oral cavity]] by means of nasopalatine (incisive) ducts.
* Flehmen behaviour is characterized by:
* Flehmen behaviour is characterized by:
** Head elevation
** Head elevation
** Curling of the upper [[Lips_-_Anatomy_%26_Physiology|lip]].
** Curling of the upper [[Lips|lip]].
* Curling of the upper [[Lips_-_Anatomy_%26_Physiology|lip]] closes the '''nostrils''' and allows negative pressure to form in the '''nasopalatine duct'''.
* Curling of the upper [[Lips|lip]] closes the '''nostrils''' and allows negative pressure to form in the '''nasopalatine duct'''.
* Flehmen behaviour allows less volatile pheromones to be examined by sensory neurons in the '''vomeronasal organ'''.
* Flehmen behaviour allows less volatile pheromones to be examined by sensory neurons in the '''vomeronasal organ'''.