I ninja nerds in City we're going to talk about the blood vessels around the head and the neck so we're going to go through piece by piece we're going to start with the arteries and then we're going to follow up afterwards with the veins all right so let's go and get started down here at the bottom all right so if you guys look here we're going to see this nice little vessel here 179 this guy right here is actually called the left common carotid artery it actually comes right off the aortic arch because it's the second vessel to come off the aortic arch because you know if the Artic arch you have it's called the brachiocephalic artery that one will go into what's called the right subclavian and the right common carotid the second one is the left common carotid so this is this guy right here the left common carotid will move up up up superiorly and then it will branch into what's called an external internal carotid artery before I show you that let me angle the skull here a little bit so it actually be a little easier to see all right so if we come up here you're going to get to this point here seventy one and it's actually going to split the vessel will split into two structures one is it's going to be called the external carotid artery which is 71 in the back here you can kind of see a tiny little guy here 72 that's the internal carotid artery the internal carotid artery will continue to move upwards through the carotid canal and and the frameless serum and it'll go and actually into the brain of supplies that Circle of Willis okay we'll have another video on the Circle of Willis okay now the external carotid artery is going to supply a lot of the actual external structures one of them is it gives off a branch here 7373 is actually called the superior thyroid artery okay so it's going to give off a superior thyroid artery then if we go up a little bit more we can see a tiny little vessel right here coming off of the external carotid artery it's a tiny little one here and it actually goes underneath a lot of these muscles to supply the tongue v it's called the lingual artery because with the superior thyroid artery then the next one is the lingual artery alright so if we follow this up more we're going to have here again this is the facial artery okay so it's going to come up over the mandible and it's going to be supplying a lot of the muscles of the face and some of the skin of the face okay so this is going to be the facial artery right there okay then if we come back here and take another little view okay we had external carotid artery in order we had superior thyroid we had lingual we had facial as we continue upwards you're going to give off another one it's going to go right here in the back okay so you know you have the into the condyles it's going to go right post here to this post tear mender to the condyle backwards this artery right there is called the maxillary artery okay so it's called the maxillary artery and then one more branch is going to be going back up here so this is going to be called these superficial temporal artery so the superficial turn forward so if maxillary artery superficial temporal artery and then one more is it comes from the back okay so again if you guys see this knot of another branch coming off here this is another branch of the external carotid artery it actually comes here and it dips underneath the mastoid process here and comes out the back into the occipital region okay this is called the occipital artery okay so let's go and do a quick recap of them running up through the top all the way through okay so recap left common carotid gives off external carotid artery and internal carotid artery internal carotid artery goes up and supplies the Circle of Willis that was 7271 is the external carotid artery what was the first branch here superior thyroid the next one is this tiny little guy here that moves underneath a lot of these muscles here these super hide muscles this is called the lingual artery another branch comes up over the mandible and this is the facial artery then as it proceeds superiorly it gives off another branch going up right here you can kind of see it right here in the back part of the mandibular condyle this posterior mended with the condyle here this right there is called the maxillary artery then as we go up even more superior up into the temporal region where the temporalis muscle is you're going to have the superficial temporal artery and then if we come backwards we'll see a tiny little guy coming off here that goes underneath the mastoid process and into the back where the occipital region is this is the occipital artery alright so that covers the branch to the external carotid artery all right so this is actually going to be another view of the facial artery here now the view of the patriarch but as you continue to go upwards you'll see what's called another artery kind of coming out from the orbit here this is actually called the Supra trochlear it runs with what's called the super trochlear nerve which is a branch off of the trigeminal nerve but again this artery air cycle actually called the Supra trochlear artery okay just as you don't get to confuse with the facial artery all right let's hit one more artery down here in the lower part of the neck before we move up onto the veins so if you remember I told you that the aortic arch had three big vessels coming off but when what's called the brachiocephalic artery the brachiocephalic artery split into what's called the right subclavian and the right common carotid the next one was the left common carotid we already talked about that all of its branches the third branch is going to be right here this tiny little guy here 83 this is called the left subclavian artery okay so left subclavian artery will then continue eventually into what's called the axillary artery okay so it'll also have some of its branches those two okay so that's the subclavian artery all right guess I just took the calvaria off or the skullcap and what we're going to see here is we're going to see a nice little blue dural sinuses are basically veins they're just enclosed within what's called a dural space and a dural space is basically whenever you have what's called the periosteum hour of the dura mater and the meningeal layer from the dura mater they break away usually they're very very closely connected but they break away and in between them they're going to have this dural science which basically acts like a vein this dural sinuses right there is actually called the superior sagittal sinus and it actually runs within a nice little Darrell septum which we call the falx cerebri which is within the longitudinal fissure okay so again that's the falx cerebri it's one of the dural sinuses it's acting like a vein and it's draining the blood okay and it's going to then take it to some other structures okay so again that's the superior sagittal sinus I guess now we're going to go look at the dural sinuses inside of the skull here a little bit in the inferior portion so we sell the superior sagittal sinus on the skull cap now we're looking here and inside if you look here we're going to have what's called the occipital sinus okay so this one right here is called the occipital sinus then we're going to have this nice little big old structure right here called the junction or the confluence of a lot of the sinuses okay so that's the junction of the confluence of the sinuses and again this is the occipital moving here this sinus of just kind of moving from side to side here a little bit more interiorly this is called the transverse sinus transverse sinus then it actually is going to have a little sinus here that's moving on the upper part of the petrous component of the temporal bone so this is called this one up here it's called the superior petrosal sinus and then there's one right here which is on the inferior part of the the tetris component attempt or loan this is called the inferior petrosal science if you guys remember from the abducens nerve video it moves with the abducens nerve through Durell o's canal into the cavernous sinus so again this is the inferior petrosal sinus right there this right here is called the sigmoid sinus because this is called the sigmoid sinus now eventually what happens is a lot of the blood from these Durrell Sciences eventually drain into what's called the sigmoid sinus and the sigmoid sinus empties dis blood into what's called the internal jugular vein which runs through a hole in the skull called the jugular foramen okay so to move through a whole new school called the jug of the frame and there's the drag of the frame in there and actually moves through that hole and again this blood from the sigmoid sinus dumps into the internal jugular vein the internal jugular vein will move through the jugular foramen and eventually it'll take the blood downwards where it combines with another vein called the subclavian vein to form is called the brachial cephalic vein we'll talk about that quick recap here we go occipital sinus junction the confluence of the zionists transverse sinus superior petrosal sinus inferior petrosal sinus sigmoid sinus sigmoid dumps into the internal jugular vein which goes down through the jug of the foramen combines with the subclavian vein to form what's called the brachiocephalic vein alright so let's look at that now in the anterior inferior portion of the neck alright so we're going to get look at these actual vessels that I told you the internal jugular vein we've got to come down into the anterior inferior neck so right here you can't see it but the internal jugular vein eventually comes down and it runs right here this is like the hole the lumen of it this part right there so this is the internal jugular vein buts on the left side this is the left internal jugular vein this whole structure over here is the left subclavian vein remember what I told you the left subclavian vein and the left internal jugular vein fused together or come together converge together to form this structure here 99 called the left brachiocephalic vein okay same thing on the other side now before we go over there you can see a tiny little nub here that little nub is where the external jugular vein dumps its blood into it actually runs across the sternocleidomastoid so it's a little bit more superficial which again you can't see it very well right here we'll look on the other side you so you can see a little better all right so taking a look here you're going to see a little better this is actually the external jugular vein so you see that's moving across the sternocleidomastoid I guess this is draining a lot of structures from the external side right so from the face the actual back of the head and stuff like that so it's draining a lot of those structures so again this is the external jugular vein comes downward like we said in empties into this structure over here okay so since that's the right external jugular vein it dumps over here into the right subclavian vein and again if you can kind of see right here you'll see a tiny little tidbit of the right internal jugular vein fusing with the right subclavian vein to form the right brake just Valley which eventually merges with the left brachial cephalic to form is called the superior vena cable which empties into the right atrium of the heart alright so that covers all of that iron engineering so that pretty much covers everything that we were going to talk about with all the vessels of the head in the neck and even inside of the skull I hope although we made sense I hope you guys really did enjoy it if you guys did please hit the like button comment down the comment section and please subscribe as always engineers until next time