The superior labial branches (labial branches), the largest and most numerous, descend behind the
quadratus labii superioris, and are distributed to the skin of the
upper lip, the
mucous membrane
A mucous membrane or mucosa is a membrane that lines various cavities in the body of an organism and covers the surface of internal organs. It consists of one or more layers of epithelial cells overlying a layer of loose connective tissue. It i ...
of the
mouth
In animal anatomy, the mouth, also known as the oral cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds. It is also the cavity lying at the upper end of the alimentary canal, bounded on t ...
, and
labial glands.
They are joined, immediately beneath the orbit, by filaments from the
facial nerve
The facial nerve, also known as the seventh cranial nerve, cranial nerve VII, or simply CN VII, is a cranial nerve that emerges from the pons of the brainstem, controls the muscles of facial expression, and functions in the conveyance of ta ...
, forming with them the
infraorbital plexus.
See also
*
Superior labial artery
External links
Maxillary nerve
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