so the cerebral hemispheres cover a lot of other stuff that's contained within the brain so you can't see here the midbrain or the D keflon which I showed you um but there's also other things contained with it other structures in the brain which we need to know about so I'll just remove the cerebral hemispheres so what we're looking at now um is some of the stuff that's contained within the hemispheres so I'll just show you what I did here so we're looking Lally at the bin we've got the Cal hemispheres we've got our cerebellum and we can see the medulla and the ponds from this lateral view so I'll remove the left Cal Hemisphere and we've got these structures that are contained within it so you can see that the hemisphere was here and I've removed it and we're looking at these structures inside the brain so I'll get rid of that one as well so I'll just show you some familiar structures so you can see the thalamus the on either side so the thalami um you can see the hypo Thalamus and if I remove the cerebellum you can see the midbrain with the calic sitting on the tectum so what we've got inside um inside contained in the hemispheres are basil ganglia the limpic system and ventricles so we'll take a look at the basil ganglia first so we'll actually use this model with the with one half of the cerebral hemisphere CU it's a bit easier to orientate yourself when you can see the uh the hemisphere so the basil ganglia um the term is actually a bit of a misnomer it should be basil nuclei because these are collections of cell bodies which are contained in white matter in the central nervous system so they should be called nuclei rather than ganglia but they're called basil ganglia so we'll stick with that so you've got um three parts to the basil gang you've got the cordate nucleus which is this Nu this structure here so you can see here is the it's got three parts it's got a head um a body and a tail which winds around like this so that's the cordate nucleus and then outside the cordate nucleus you've got the paman so this is this spherical uh not spherical this round curved structure so this is the pin and just sitting medially to the putamen you've got the Globus paladis so I've just faded away the various structures so you can see the Globus paladis which has a internal and external or lateral and medial part so the glob padus is these two structures the lateral and the medial globous palad so these structures sit medial to the um put men so collectively the Globus paladis and the putamen are referred to as the lentiform nucleus or the lenticular nucleus and the calate nucleus which is this structure with the head the body and the tail that winds around um combined with the putamen is called the neostriatum so you've got these structures on both sides so if I just rotate around the other side you can see the c-shaped cordate nucleus so you can see its head the body and the tail um you can see the putam men sitting laterally and you can see the um Globus paladis with its lateral and medial Parts sitting medially and from this um anterior view which we're now looking at you can see our um structures from the Dian Keyon the um thalami so these sit um medial to the Globus p there are also two other components of the basil ganga uh which are the um subthalamic nucleus and the substantia [ __ ] which I'll show you in another tutorial so the next part is the lyic system which is quite complicated because it's not actually an anatomically distinct um set of structures um so it's not very clearly defined it's more a collection of functionally related nuclei um and cortical areas but but there are a few structures that are worth pointing out so we've got the the hippocampus here um or the hippoc cample formation and it's um this structure is important in the formation of memory so this structure actually sits in the uh medially in the tempal lobe so if I just rotate around you can see the temple lobe here and it sits within the medial aspect of the temple lobe um and then you've got the forx so if I just remove the basil gangler and the lateral ventricle um so the Forex runs up like this you can see it here um and you've got the Miller bodies down here um and if we follow the cordate nucleus around so follow the head the body and the tail at the end we've got this um Walnut shaped structure which is called the amydala or amygdaloid body so this is often um included by definition with the basil ganga but it's um part of the lyic system so those are just a few parts of the lyic system which are worth pointing out but it's a lot more complicated than that so finally we've got the ventricles so the ventricles are these um gray parts of this model so you've probably been wondering what these are but these um so I'll just rotate the model these are the uh the vent ventricles um and the ventricles are developed from the neural tube and are remnants of this um this uh the neural tube and they're filled with cerebros spinal fluid which is a colorless fluid um which protects and nourishes the neural tissue so I've just switched through a diagram of the ventricular system of the brain so you can see there's these C shaped um ventricles on either side so these are the lateral ventricles um you've got one on either side and they connect to a third ventricle which sits in the midline and they're connected to the third ventricle by inter ventricular foramin or foramina PL so these little bits on either side um and then the in the third ventricle connects to the fourth ventricle which lies within the ponds so you can see the vent in relation to these other structures and you can see the the third ventricle in the midline and it's wall the walls of the third ventricle are made um they supported by the thalamus they're made up by the walls of the thalamus and the cerebral Aqueduct runs within the midbrain to connect to the fourth ventricle so if I just rotate this around remove the cerebellum so you can see the fourth ventricle here sitting um within the ponds so if I just fade out the brain slowly you can see the so you can see the cerebral Aqueduct connecting the third ventricle to the fourth ventricle um like that so that's the those are the parts of the brain so we've gone through the brain stem the cerebellum the Dian Keyon which consists of the thalamus hypothalamus panal body we've talked about the cerebral hemispheres and the um cerebral cortex we've talked about the lobes and we've talked about the stuff that's contained inside the hemisphere so the basil ganglia the lyic system and the ventricles so I hope that's given you a sort of three-dimensional idea of how the parts of the brain relate to each other