Here's that other half where we had the corpus callosum and the septum polucidum in front of the lateral ventricle. Down below we have this really well-formed circle. It's a very circular bit of tissue and that is the thalamus. Remember there are two sides, the left and the right side so if we cut straight down the center we would say this is where the two thalamai meet so the interthalamic adhesion is that part we talked about that's missing in 30% of males the connection between the two sides of the thalamus thalamai but it's a very good landmark when you're looking at a sheetbrain that doesn't have a lot of differences in the tissue it just looks like a big blob of tan tissue so if you have the circle that's the thalamus. Okay the epithalamus is upon the thalamus and it's going to go over the top of the thalamus just a very thin line that's going to end here in this round structure this other round structure that's the pineal gland or pineal gland that produces melatonin that helps regulate your circadian rhythms. Okay so it's pretty large you can see here in the sheetbrain. Big round circle is the thalamus the small around circle behind it is the pineal or pineal gland epithalamus connects it. The third ventricle is actually going to surround this thalamus so the third ventricle has connections that we can't quite see with this lateral ventricle on either side but it's surrounding the whole thalamus which is located in this middle region the midbrain so that's why it's also called the ventricle of the midbrain and you can see a little bit of pigment down there that's probably some cord plexus that can't quite get into. The aqueduct of the midbrain that connects the third ventricle with the fourth ventricle is actually going to come down around the thalamus it's going to be this connection right here that you can follow down as we come down it's going to go in between the rest of this brainstem and the cerebellum so the aqueduct of the midbrain is this canal and it's going to empty into this fourth ventricle which is right here in this indent of the cerebellum so it's right in the middle of the cerebellum that it indents and the emptying of that canal is a more wide open space that's the fourth ventricle. The canal as it comes up you can see this is where those corporate quadrigemina are in this mid-saggital view that you're looking at down the center cut this is the superior colliculus and the inferior colliculus that's the singular version of colliculi and if this is the thalamus this round circle is the thalamus then below it is the hypo thalamus right so this region between the mammillary body which I guess I haven't mentioned in this view yet this round structure is the mammillary body and that these are the cerebral peduncles the foot paths that we've cut through coming from the ponds so it's right on the other side of the colliculi these are the cerebral peduncles mammillary body and then the hypothalamus this is the optic chiasm that was cut through so this little region the hypothalamus is responsible for all sorts of functions and it does produce a couple of hormones and stimulates other hormones to be produced or distributed from the pituitary gland this is where the infantibulum would be and the pituitary gland would hang down from that okay here is another brain half we're looking at the cerebellum now this white matter these little tree branches that you see coming out white matter into the gray matter those are the arbor vete vete the tree of life that's the white matter within the gray matter all these folia are they the ridges that are like gyrry but ridges I think are a little bit different for the cerebellum to the folia and then right here right around that area where the fourth ventricle was located this would be the flocculo nodular lobe if you remember that word and that's gonna have an important function for pathways that we'll see maintaining equilibrium and balance which we know the cerebellum is responsible for so here we are with our mid-saggital split of the sheet brain and if we remember all those parts that we just went over and put it back together you can see again just some big landmarks the optic chiasm here is going to be your landmark to tell you right behind it is the infant dibulum and therefore if we open it up right in those locations is where you'll find the hypothalamus the big round thalamus above it so here's that optic chiasm cut again the mammillary body in between is the hypothalamus above it is the thalamus and remember that thalamus for our purposes we're just remembering that it is right in the middle of the brain it's the relay center so all the information sensory information that's coming in from all these different nerves locations it's going to end up going through the thalamus until it's there are different nuclei in here that are responsible for each different region the information is going to go up eventually to the different cortices different areas of these cortex parts of the lobes of the cerebrum so it's important that everything goes through this thalamus except for one particular nerve and that's going to be this all factory nerve with the all factory bulb all factory check because it has direct connection with the nerve and the cerebrum so therefore it doesn't need to go through the thalamus well that is a pretty good overview of our sheet brain we're going to go ahead and say goodbye it's nice view goodbye from lefty goodbye from righty we're on to the eyeball next