Changes

The olfactory receptors are embedded in the mucous membrane within the nasal cavity. They are bipolar neurones, and are covered with cilia (non-motile). It is thought that these cilia contain the active sites for the olfactory transduction process. The axons from the olfactory receptors join together and become the olfactory nerve ([[Cranial Nerves - Anatomy & Physiology|CN I]]). The axons pass through the perforations in the cribriform plate of the ethmoid bone, and enter the olfactory bulb. Once the axons have entered the olfactory bulb, the olfactory nerve synapses on mitral cells. The axons from these cells then project into the olfactory cortex of the cerebral hemispheres, via the olfactory tract. The olfactory cortex is the only region within the cerebral hemispheres that receives direct sensory input without any information first passing through the thalamus. This is because the olfactory system evolved before the thalamus.

The olfactory receptors are embedded in the mucous membrane within the nasal cavity. They are bipolar neurones, and are covered with cilia (non-motile). It is thought that these cilia contain the active sites for the olfactory transduction process. The axons from the olfactory receptors join together and become the olfactory nerve ([[Cranial Nerves - Anatomy & Physiology|CN I]]). The axons pass through the perforations in the cribriform plate of the ethmoid bone, and enter the olfactory bulb. Once the axons have entered the olfactory bulb, the olfactory nerve synapses on mitral cells. The axons from these cells then project into the olfactory cortex of the cerebral hemispheres, via the olfactory tract. The olfactory cortex is the only region within the cerebral hemispheres that receives direct sensory input without any information first passing through the thalamus. This is because the olfactory system evolved before the thalamus.

==[[Vomeronasal Organ]]==

==Vomeronasal Organ==

 

Click here for information on the [[Vomeronasal Organ]].

==Histology==

==Histology==