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Cranial Nerves - Anatomy & Physiology (view source)
Revision as of 11:30, 11 August 2011
, 11:30, 11 August 2011→Hypoglossal nerve (XII)
Clinical problems with the vestibulocochlear nerve would be indicated on examination by changes in hearing and/or horizontal and verticle eye movements (strabismus and nystagmus). A head tilt is also associated with this nerve.
Clinical problems with the vestibulocochlear nerve would be indicated on examination by changes in hearing and/or horizontal and verticle eye movements (strabismus and nystagmus). A head tilt is also associated with this nerve.
===Hypoglossal nerve (XII)===
===Hypoglossal nerve (XII)===
The hypoglossal nerve is part of the group of cranial nerves responsible for the control of muscles of the head. It is in part a cervical nerve due to its caudal position on the [[Hindbrain_-_Anatomy_%26_Physiology|brain stem]]. The nerve is composed of '''general somatic efferent fibres''' which control the intrisic and exterinsic muscles of the tongue (together with other nerves including the lingual nerve, facial nerve, lingual branch of the glossopharyngeal nerve and the vagus nerve). The nuclei of the nerve is located within the medulla oblongata of the brain stem and it passes through the '''hypoglossal canal'''.
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During a clinical examination any deviation of the tongue may indicate a problem with this nerve. Deviation of the tongue is always to the side of the lesion.
==Cranial Nerve Location and Routes==
==Cranial Nerve Location and Routes==