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The hypoglossal nerve may be connected (anastomosed) to the facial nerve to attempt to restore function when the facial nerve is damaged. Attempts at repair by either wholly or partially connecting nerve fibres from the hypoglossal nerve to the facial nerve may be used when there is focal facial nerve damage (for example, from trauma or cancer).
The hypoglossal nucleus is located between the dorsal motor nucleus of the vagus and the midline of the medulla. Axons from the hypoglossal nucleus pass anteriorly through the medulla forming the hypoglossal nerve which exits between the pyramid and olive in a groove called the anterolateral sulcus.
The hypoglossal nerve (XII) supplies the intrinsic muscles of the tongue, controlling tongue movement. [16] The hypoglossal nerve (XII) is unique in that it is supplied by the motor cortices of both hemispheres of the brain. [17] Damage to the nerve may lead to fasciculations or wasting of the muscles of the tongue. This will lead to weakness ...
Located in the hypoglossal canal. Provides motor innervation to the muscles of the tongue (except for the palatoglossal muscle , which is innervated by the vagus nerve) and other glossal muscles . Important for swallowing (bolus formation) and speech articulation .
Laterally, in between the hyoglossus muscle and the mylohyoid muscle, lay several important structures (from upper to lower): sublingual gland, submandibular duct, lingual nerve, vena comitans of hypoglossal nerve, and the hypoglossal nerve.
The hypoglossal canal is a foramen in the occipital bone of the skull. It is hidden medially and superiorly to each occipital condyle . It transmits the hypoglossal nerve .
It lies on the lateral side of the genioglossus, the main large extrinsic tongue muscle, accompanied by the lingual nerve. However, as seen in the picture, the deep lingual artery passes inferior to the hyoglossus (the cut muscle on the bottom) while the lingual nerve (not pictured) passes superior to it (for a comparison, the hypoglossal nerve ...
Ansa cervicalis. The superior root of the ansa cervicalis (formerly known as descendens hypoglossi [1]: 500 ) is by fibres of the cervical spinal nerve 1 [1]: 344 [3] (and, according to some sources, of cervical spinal nerve 2 as well [3]) that have joined and run with the hypoglossal nerve (CN XII) for some distance before [1]: 344 progressively [1]: 369 branching off the CN XII in the ...