Part
of the
face
just
below
the
nose.
It is
guarded
by two
lips -
upper
and
lower
lips
which
has an
internal
cavity
which
extends
from
the
isthmus
of fauces
at its
junction
with
the
oropharynx
to the
inner
aspect
of the
lips.
It
contains
the
following
BONES:
Maxilla,
mandible
Muscles:
Circumoral muscles
with
modiolar attachments:
levator labii superioris,
levator labii
superioris alaeque nasi,
levator anguli oris,
zygomaticus major,
zygomaticus minor,
risorius,
depressor anguli oris,
depressor labii inferioris,
malaris,
mentalis,
orbicularis oris,
incisivus
labii superioris, incisivus
labii inferioris,
buccinator
Arteries:
Lingual
artery,
facial
artery
(tonsillar
branch)
Veins:
Lingual
vein,
facial
vein
Nerves:
Glossopharyngeal
nerve,
maxillary
nerve,
mandibular
nerve,
hypoglossal
nerve,
facial
nerve
Others:
Tongue,
oral
glands,
teeth,
gums