Changes

Many of the cranial nerves with nuclei within the [[Equine Brain - Horse Anatomy|#Hindbrain|brainstem]] contain sensory and motor neurone components. The sensory fibre components have their cell bodies located in ganglia outside the central nervous system and the motor fibre element have their cell bodies within the central nervous system. The'''Olfactory nerve (I)''', '''Optic nerve (II)''' and '''Vestibulocochlear nerve (VIII)''' are sensory nerves.  The , '''Oculomotor nerve (III)''', '''Trochlear nerve (IV)''','''Abducens nerve (VI)''','''Accessory nerve (XI)''' and '''Hypoglossal nerve (XII)''' are motor nerves. Finally, the '''Trigeminal nerve (V)''', '''Facial nerve (VII)''','''Glossopharyngeal nerve (IX)''', and '''Vagus nerve (X)''' are mixed sensory and motor nerves.

Many of the cranial nerves with nuclei within the [[Equine Brain - Horse Anatomy|#Hindbrain|brainstem]] contain sensory and motor neurone components. The sensory fibre components have their cell bodies located in ganglia outside the central nervous system and the motor fibre element have their cell bodies within the central nervous system. The'''Olfactory nerve (I)''', '''Optic nerve (II)''' and '''Vestibulocochlear nerve (VIII)''' are sensory nerves.  The , '''Oculomotor nerve (III)''', '''Trochlear nerve (IV)''','''Abducens nerve (VI)''','''Accessory nerve (XI)''' and '''Hypoglossal nerve (XII)''' are motor nerves. Finally, the '''Trigeminal nerve (V)''', '''Facial nerve (VII)''','''Glossopharyngeal nerve (IX)''', and '''Vagus nerve (X)''' are mixed sensory and motor nerves.

In the horse, special consideration must be given to diseases of the [[Equine Upper Respiratory Tract - Horse Anatomy#Guttural Pouches|guttural pouch]] when considering cranial nerve dysfunction. The Glossopharangeal (IX), Vagus (X)and  Accessory (XII) nerves are located in the medial compartment of the guttural pouch. The Facial (VII) nerve runs along the lateral compartment. The Mandibular nerve (V2) has limited contact with the dorsal wall of the lateral compartment. [[Guttural Pouch Mycosis]]results in paresis of cranial nerves IX,V and XII as well as erosion of the internal carotid artery. Rarely, there is involvement of cranial nerves VII and VIII.

In the horse, special consideration must be given to diseases of the [[Equine Upper Respiratory Tract - Horse Anatomy#Guttural Pouches|guttural pouch]] when considering cranial nerve dysfunction. The Glossopharangeal (IX), Vagus (X)and  Accessory (XII) nerves are located in the medial compartment of the guttural pouch. The Facial (VII) nerve runs along the lateral compartment. The Mandibular nerve (V2) has limited contact with the dorsal wall of the lateral compartment. [[Guttural Pouch Mycosis]] results in paresis of cranial nerves IX,V and XII as well as erosion of the internal carotid artery. Rarely, there is involvement of cranial nerves VII and VIII.

==Olfactory Nerve (I)==

==Olfactory Nerve (I)==