Bassett Collection Large Image - Lane Medical Library, Stanford University Medical Center

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Left infraorbital, labial and buccal regions

Nerves and muscles of upper lip

A portion of the quadratus labii superioris muscle has been reflected superiorly (12).

1 .	Angular head of levator labii superioris muscle
2 .	Naris
3 .	Ala nasi
4 .	Septal branch of angular artery
5 .	Filament of internal nasal branch of infraorbital nerve
6 .	Artery of nasal septum (branch of superior labial artery)
7 .	Orbicularis oris muscle
8 .	Upper lip
9 .	Superior labial branches infraorbital nerve
10 .	Infraorbital head of levator labii superioris muscle
11 .	Angular artery
12 .	Part of levator labii superioris muscle which inserted into skin of upper lip (reflected superiorly)
13 .	Depressor anguli oris muscle
14 .	Zygomaticus muscle
15 .	Superior labial artery and labial glands
16 .	Angle of mouth