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Cranial Nerves - Anatomy & Physiology (view source)
Revision as of 17:18, 11 August 2011
, 17:18, 11 August 2011→Cranial Nerve Fibre Types
====Special Somatic Afferent (SSA)====
====Special Somatic Afferent (SSA)====
The special signifies that this fibre type is found in nerves related to the special senses which include vision and hearing. This therefore relates to the optic nerves (cranial nerve II) and the auditory/vestibular systems which are the vestibulocochlear nerves (cranial nerve VIII).
The special signifies that this fibre type is found in nerves related to the special senses which include vision and hearing. This therefore relates to the optic nerves (cranial nerve II) and the auditory/vestibular systems which are the vestibulocochlear nerves (cranial nerve VIII).
=====Vision=====
'''Occipital cortex —→ Thalamus MGN —→ Rostral colliculus/Retinal ganglion cell —→ Bipolar cell —→ [[Eye - Anatomy & Physiology|Vision]]'''
=====Hearing=====
'''Temporal cortex —→ Thalamus MGN —→ Caudal colliculus and hindbrain —→ Spiral ganglion —→ [[Ear - Anatomy & Physiology|Hearing]]'''
====General Visceral Afferent (GVA)====
====General Visceral Afferent (GVA)====
This fibre type is commonly found in sensory nerves to organs and to sensory tissues related to chemicals. These include fibres found in the glossopharyngeal nerves (cranial nerve IX) and the vagus nerves (cranial nerve X).
This fibre type is commonly found in sensory nerves to organs and to sensory tissues related to chemicals. These include fibres found in the glossopharyngeal nerves (cranial nerve IX) and the vagus nerves (cranial nerve X).
====Special Visceral Afferent (SVA)====
====Special Visceral Afferent (SVA)====
This fibre type is found again in special sense organs related to the sensing of chemicals and therefore including taste and olfaction. The olfactory sense relates to the olfactory nerve (cranial nerve I) and the taste senses relate to the facial nerve (cranial nerve VII), the glossopharyngeal nerve (cranial nerve IX) and the vagus nerve (cranial nerve X). The sense of taste is performed by the gustatory organ which are cells located in gustatory papillae in the mucous membrane of the dorsal side of the tongue. Taste buds can also be found in the soft palate, pharynx, larynx, lips and cheeks.
This fibre type is found again in special sense organs related to the sensing of chemicals and therefore including taste and olfaction. The olfactory sense relates to the olfactory nerve (cranial nerve I) and the taste senses relate to the facial nerve (cranial nerve VII), the glossopharyngeal nerve (cranial nerve IX) and the vagus nerve (cranial nerve X). The sense of taste is performed by the gustatory organ which are cells located in gustatory papillae in the mucous membrane of the dorsal side of the tongue. Taste buds can also be found in the soft palate, pharynx, larynx, lips and cheeks.
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=====Olfaction=====
'''Priform cortex —→ Olfactory tubercle —→ Olfactory Bulb —→ [[Nose - Anatomy & Physiology|Smell]]'''
=====Taste=====
'''Sensory cortex —→ Thalamus —→ Hindbrain (VII, IX, X) —→ Ganglion —→ [[Gustatory System - Anatomy & Physiology|Taste]]'''
===Efferent Fibres - Motor===
===Efferent Fibres - Motor===
====General Somatic Efferent (GSE)====
====General Somatic Efferent (GSE)====
'''Brainstem —→ Parasympathetic nuculi —→ Parasympathetic ganglion —→ Gland etc.'''
'''Brainstem —→ Parasympathetic nuculi —→ Parasympathetic ganglion —→ Gland etc.'''
'''SVS'''
==Cranial Nerves==
==Cranial Nerves==