00:01
Now let's take a
look at the palate.
00:06
Here we see the hard palate
which is composed of bone
largely by the maxilla and then
posteriorly by the palatine bone.
00:15
And then posterior
to the hard palate
is the soft palate
which lacks bone.
00:22
There are some muscles though
found in the soft palate.
00:26
We have the palatoglossus going
between the soft palate and the tongue,
then the palatopharyngeus going
from the palate to the pharynx.
00:36
We also have some
muscles more superiorly,
such as the levator
veli palatini,
and the tensor veli palatini.
00:46
We also have the
musculus uvulae,
which is the muscle
that's found in the uvula.
00:54
Most of these are
going to be supplied by
the vagus nerve
or cranial nerve X
with the exception of
the tensor veli palatini,
which is innervated by
the mandibular nerve,
or cranial nerve V3.
01:08
Here in a sagittal view,
we see the hard palate
and in the mucosa, that
overlays the hard palate
has a lot of palatine glands,
and then the soft palate
terminates in the uvula.
01:22
We have these arches formed by these
muscles that we just described,
such as the palatoglossal
arch formed by palatoglossus
and the palatopharyngeal arch
formed by the palatopharyngeus.
01:36
In between these two arches is
where we find the palatine tonsil.
01:41
And these are the tonsils
people typically think about
when you have tonsillitis,
although there are other tonsils
throughout the oral
cavity and pharnyx.
01:50
We take an inferior
view of the palate,
we can see some of the
blood vessels and nerves.
01:57
More anteriorly, over
the maxillary portion,
we have the greater
palatine artery
and more posteriorly over
the palatine bone area,
we have the lesser
palatine artery.
02:08
Similarly,
we have the greater
palatine nerve
over the anterior portion
and the lesser palatine nerve
over the posterior portion.