00:02
Posteriorly the hard palate
finishes off via the palatine bone.
00:08
The palatine bone has horizontal
and perpendicularly oriented plates.
00:14
So the horizontal plate
is the portion that actually
contributes to the hard palate.
00:20
Superiorly we have
the nasal surface.
00:24
And inferiorly, we have
the palatine surface.
00:27
And so this is part of what's
separating the oral cavity
from the nasal cavity.
00:32
In the midline this groove is
therefore called the nasal crest.
00:36
Superiorly and inferiorly it's
called the palatine crest.
00:41
We also have a groove here called
the greater palatine groove.
00:45
Through which many
structures will pass.
00:48
We also have the vertically
oriented perpendicular plates.
00:52
And of course medially they
will have a nasal surface
because they're interacting
with the posterior aspect
of the nasal cavity.
01:01
Laterally, it would be
the maxillary surface.
01:05
So turning around we
again have a little crest
for nasal concha
called the nasal crest.
01:11
In an area where the ethmoid
will be participating
called the ethmoidal crest.
01:17
We have openings here called
the inferior nasal meatus.
01:22
And that's going to be the opening
behind or below the inferior concha.
01:28
Similarly there's a
middle nasal meatus,
which will sit inferior to
the middle nasal concha.
01:36
Finally, there's a
superior nasal meatus
sitting just below and behind
the superior nasal concha.
01:44
And again laterally is going to be
the surface for the maxillary bone.
01:50
Laterally we have
various processes
called the pyramidal processes.
01:55
And superiorly, up towards the
orbit we have orbital processes.
02:00
More posteriorly
towards the sphenoid
we have the
sphenoidal processes.