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Current time:0:00Total duration:4:32

Video transcript

so we know that the cerebrum is primarily supplied by the anterior cerebral artery the middle cerebral artery and the posterior cerebral artery so let's actually draw out on the surface of these brains here let's draw out their their supply areas their vascular territories so let me orient you here so here's that side view of the brain again looking directly from the side and and this brain here this is just one half of the brain so what we've done is essentially we've cut away one half of a brain right and we're looking at the remaining half right from this side so remember we said your anterior cerebral artery is going to do right between these lobes remember we said the anterior cerebral arteries here so it's going to serve the inside parts of the lobes right so your anterior cerebral artery it's going to serve blood to the inside part of the medial part of your frontal lobe as well as just a little bit on the outside as well sort of like a little bit of spillover from the blood supplying the medial part of the frontal lobe now your middle cerebral artery is is responsible for doing a lot of the lateral part of your brain the outside part of your brain so it's going to do most of the lateral part of your frontal lobe that's going to serve blood to it it's going to supply a lot of the lateral aspect of the parietal lobe it's going to supply a little bit of the occipital lobe and it's going to supply a lot of the temporal lobe all laterally okay so you're not really going to see too much middle cerebral artery supply on the inside part the medial part of your brain except you might see a little bit sort of as spillover at the edge of this temporal lobe you might see a little bit right about there and now the posterior the posterior cerebral artery the posterior cerebral artery is going to do the rest of the lateral aspect of the cerebrum so that's some of the parietal lobe most of the occipital lobe and a fair chunk of the temporal lobe so that's the occipital on the outside and the inside and the that bit of the temporal lobe on the outside and the inside all right so that's a major blood supply to the cerebrum let's now look at the blood supply to the cerebellum all right so let's make the theme our color scheme of the cerebellar arteries let's make it this nice little purple here purple and pink so the main arteries of the cerebellum are the superior cerebellar which I'll draw in purple here new period cerebellar so they're actually coming off the basilar artery and wrapping backwards to reach the cerebellum and it's really tough to see on this end to review but you'll just have to trust me that it's there the next one is the anterior inferior cerebellar artery so I'll draw that in this darker purple here and again that's coming off the basilar artery you can just see how important this basilar artery is and last we have our posterior inferior cerebellar and that one comes off the vertebral arteries and serves the bottom bit of the cerebellum it's a little bit tough to see on the anterior view so I won't draw it in there so those are the three major arteries of the cerebellum see when you group them like this I find it's a lot easier to sort of digest it all alright and finally we have the brainstem so let's use green for our theme our color scheme for the the brainstem arteries so for the brainstem we have these branches that come off the basilar artery called the pontine branches as a group we'll just consider them the pontine branches and they're called the pontine branches because they serve mainly the part of the brainstem called the pons and here they are on the anterior view last we have the anterior spinal artery okay so the anterior spinal artery sort of runs between it actually is connected to both of vertebral arteries and runs down the spinal cord the front of the spinal cord hence the name anterior spinal artery so the anterior spinal artery even though it's called the spinal artery it still supplies a bit of the brainstem so all these everything I just these are the main blood vessels of the brain