Following a penetrated injury in the submandibular triangle, the tongue of 45 year old patient detes to the left on protrusion. Which of the following nerves is injured?
A lesion of the hypoglossal nerve causes detion of the tongue toward the injured side on protrusion. The lingual and glossopharyngeal nerves do not supply the tongue muscles. Hence option 4 i.e. left hypoglossal nerve (same as the side of detion) is correct.
Right lingual nerve
Left lingual nerve
Right hypoglossal nerve
Left hypoglossal nerve
Neck Triangles and parotid gland