hey everybody professor long here gonna go over the neuron model so if you're following along on your list of things to know we are on page 31 and we're just going to try to follow along the list here I may not go in the exact order of the list but I'll do my best so as we were covering in the drawings video this is the soma this entire area right here would be listed as the soma if you look carefully at the model they sort of stained this area a little bit darker right around the nucleus so we have the nucleus here we have the peri carry on this little darker area right around here you see a little bit of a blue stain to it and then this is the soma this entire area all the way across here okay each one of these white branches is a dendrite you can see multiple dendrites many of them they've been cut okay these little flesh-colored or I don't know what color you want to call that mauve taupe I don't know I'm not a color guy but this would be a tea load and rayon and a synaptic knob and you see the tea load indriya and synaptic knobs of other neurons synapsing on this one onto the dendrites so soma nucleus carry carry on dendrites this area here is the axon hillock and then this is the axon now if I step back a little bit the axon would continue right here this was cut but it was attached there and it would continue as this orange piece they've actually cut kind of into it and carved about half of it away so we can see the axial plasm inside this entire structure running here from here from this structure all the way through here is the axon the membrane covering the axon this covering here is the axial EMA now you can see these cells here that are wrapped around the axon are all your Schwann cells I see actually two-and-a-half Schwann cells you can see the different layers of the Schwann cell here as it's wrapped around and around and around each layer or the membrane of this cell is called the Nuri lemma with an eye so the cell if I asked you for the cell that's the Schwann cell the cell that goes from roughly here to there and then the covering is the new real Emma these little gaps right here and they're not very large but you see those indentations those are your nodes of ranvier so finally just like muscles neurons have a connective tissue covering and a muscle we called it the endomysium here we're gonna call this the endo Nerium and it if if a neuron is myelinated the endo nerium's outside the myelin and would cover the a lot of this structure but you see some you see the endo Nerium here and at the end of the model you can see the axon what the Schwann cell wrapped around it okay now when we get to the end of the model please forgive me but I have to move some things around what we're going to see is this more I apologize for all the poor camerawork but it's me holding my camera this represents one of these little structures what we're seeing is the T load and Rhian sorry and the synaptic knob here this is a T load and Riaan this is the synaptic knob inside the synaptic knob you see all these smaller structures called synaptic vesicles I dropped to my pointer so forgive me and this little line right here represents the next neuron the next cell and that would be called the postsynaptic membrane because the gap between them if there were a little space here would be called the synaptic cleft just like on a neuromuscular Junction since this neuron is before the synapse it's called the presynaptic neuron or presynaptic cell the cell that comes after the synapse would be called the postsynaptic cell so if I were looking at this model this would be my presynaptic neuron synapsing on to my postsynaptic cell and the small gaps that would exist inside of here would be called the synaptic cleft all right if you put that together with the drawing I hope that this all makes sense to you and I hope you can make sense of the pictures from online thanks for watching and I hope you had much fun as I did