and now we make it to the abdominal area um we look back up here at the heart moving camera we look at the aorta as it's leaving the left ventricle the ascending aorta is the part that's going to be going up right and then it takes the arch we call that the arch the aortic Arch we're clever mhm and then we go down so we have to turn and that's going to go behind the heart this is the descending thoracic aort so it literally Cuts behind the heart on this model and as we pass the diaphragm which is where we're focusing now we are going to pass into our descending abdominal aorta and there are a few branches off of this aorta that we need to look at and I'm going to zoom in ready for this W all right so as we look right here on the abdominal aorta you can see there are two red branches that are kind of clicking off here the very first one is going going to be a little system that pops off of the Celiac artery so the Celiac trunk has three major branches you need to know the first one is called the hepatic this is the one that goes to the liver which you can see right there the second one is going to go up to the stomach so it's called the gastric and then the third is called the splenic which will go over to the spleen so if we look at the second little bump off of the aorta that little little trunk right there down a little farther that one oop sorry that's okay that is the superior mesenteric artery that's going to be feeding our intestines with blood and as we follow it down the aorta we have two more branches that come off of the K or go to the kidneys the left renal artery and the right renal artery and as we move down just a little bit farther the little Branch right here is going to be our inferior mic artery that will be feeding our lower or large intestines now we see that the aorta splits why the heck do we need to split the aorta cuz we have legs what two legs that we need to feed right so the arteries here are going to split off to go down basically through the hips into the legs the first little section there is our common iliac artery so note there's a common iliac artery on the human there will not be on your cat the cat does not have a common iliac artery but we will see the internal iliac artery that goes down into so the right and the left there and then the external iliac artery which is going to continue down towards the hip on both the right and the left side so as we go down the leg we are going to hit a point about right there where we um Act don't it is no longer external iliac this becomes our femoral artery gosh I love how these are named after the bones right we learned all these for a reason goodness all right so as we follow the whole femur down towards the knee we're going to end up in the poal region oh one of those anatomical names do you think that this might be called the poal artery I'm thinking all right it is you're correct yay Y and the blood is of course going to continue down to the toes but we're not going to worry about the names of those and blood of the toes blood of the to it's going to have to come back coming back so we got to look at the right leg on this model from that and as we look at this really long blue artery that runs I'm sorry it's a vein it moves all the way back up to the hip this is called the Great sainis vein it is the longest vein in your body that's going to be draining blood from the toes now as it comes up it's going to run along side our femoral vein so again there's a poal and a femoral vein uh as well as artery and as it comes back up towards the hip is again we're going to meet the external iliac vein and we're going to converge with the internal iliac vein both of those will come together forming the common iliac vein there is a common iliac vein on the cat there is not a common iliac artery on the cat cats are weird so as both of the common iliac veins meet together they're going to be forming our inferior vnea the inferior vnea is going to be collecting blood from all over the place um including the lumbar region which we can't see on this model somewhere in here we should be able to find it on the cat and then we're going to be grabbing from both the right and the left reenal veins coming out of the kidney and then we got this purple thing going on oohp this purple-ish thing on here is what we call the hepatic portal system fancy fancy I know it's going to be grabbing and distributing blood up to the liver from all of our intestines because when we get all that crap out of our food then we've got to filter it and send it into the right places filtering and cleaning gut stuff it's complicated going through the liver and so the inferior vnea is going to continue up grabbing all of that dirty blood and taking it back to the right atrium and that's the entire circle yeah it's a good Circle