hello all this is dr. Alsup and in this video we will be focused on the arteries that supply
muscles of mastication which are all branches of the maxillary nerve for the most part we will
delve into the branches of all the branches of the maxillary artery in the next session but we're
just going to focus on a few right now so let's get started okay let's try to understand what has
been dissected and removed in this image we are looking at a lateral view with a good portion of
the ramus of the mandible being removed you can see here is the the angle of the mandible this
is the ramus and a good portion has been removed leaving a little bit of the mandibular condyle
here to get an idea of where TMJ is going to be located and so this really will afford a view
because the masseter muscle has been removed with the ramus so you can really see the deeper lateral
pterygoid our portions of it here as well as the medial pterygoid here so this really affords a
nice view of the second part the or the pterygoid part of the maxillary artery so you can see that
right in this region here so it's the second part that's really closely associated with the lateral
pterygoid muscle it's either just superficial too or just deep too which in this case you can see
it is superficial to the lateral pterygoid these three arteries are all going to be branches of the
second part in fact all branches of the second part of the maxillary artery supply muscles of
mastication and supporting and surrounding tissues we'll talk about some of those and a
bit more detail in subsequent sessions so one of the first branches of this second part is going
to be the masseteric artery which I'm kind of drawing in where it's located right here it's been
cut here and so it's really hard to understand what this artery branch is without a lot of the
context because you don't get this the chance to see where it's really headed because the masseter
muscle has been removed we'll see a better view of this artery in a moment but you can see the
ACE ending posterior deep temporal artery here I'm drawing right there putting a little arrow
at this artery also supplies a variable nimble number of small pterygoid branches which can
supply portions of those pterygoid muscles of mastication the anterior deep pterygoid artery
is going to be a bit more anteriorly placed as its name would suggest that one's going
to be the anterior temporalis this will be the posterior temporalis or temporal temporal arteries
and you can really see them headed towards that temporalis muscle up here they're going to head
towards the deep part of the muscle and that's where it's going to send the arterial supply I
wanted to show just one more view with the ramus completely intact in this particular
image but the masseter muscle has been reflected in this particular image temporalis muscle is
still intact you can really see its attachment to the coronoid process here and you can also
see the masseteric artery and the masseteric nerve right here as it's travelling over that
mandibular notch to serve the masseter muscle and it's going to go to the deep part of the muscle as
most arteries and nerves do so that's a really important anatomical relationship right there
how that masseteric neurovascular bundle will go over the mandibular notch all right so that is it
for this video as I mentioned at the beginning we will focus on the maxillary artery and its
branches a much greater detail in the inference session thank you for your time and attention