More than the muscles there will dilate is regulated by the autonomic nervous system autonomic nervous system nervous system extends muscle either, or which of these flow options. We are going to see that, so when I talk about that on the way artery. 

That together is why we have a time of resistance and so what's happening.

 This is exploring from the elastic musk to the arterials and we get this velocity. 

Velocity Right huge drop really happens at the arterioles 

arterioles -Slow everything down

Or we reach the capillaries, we need to exchange, nutrients and gases

So again, remembering materials, they were called resistance specials as a result

Arterioles- with the muscular arteries. They also have. 

Lay's new muscle. That's very important so arterials are really critical for regulating blood flow through remembering materials. They were called resistance vessels as a result them to arterials are also going to just like what we saw with the muscular arteries. They also have layer of new muscle. That's very important so arterials are really critical for regulating blood flow through capillaries 

So arteries can help distribute bigger organ level which organs areas of the body will get more or less live. Arterials are really about regulating blood blood flow, so if we zoom in it looks like this all throughout your body blood typically coming through and travel in this direction so if you want You'll see that muscle muscle capillaries can close. This is actually the clothes of these year here here are all closed so what you see is that the blood only flows through that middle, capillary fair and you don't actually see you don't actually see any of the blood flow, the rest of the bed , but those relaxed capillary bed with blood capillary bag in the surface of your skin capillaries is when it's very cold right, so when it's cold out you don't wanna have a bunch of seats to the outside and deck environment so the more blood flow you have to the skin. The more heat is lost that's one of the reasons why it's actually beneficial  That you get all that blood flow even to the skin. If you look at people who just been out on a ride right like their face is very slush this is what's happening so there their condition is the opposite of this. They would actually have lots of bloodflow through Cavalary, but when it's very cold out, we have certain areas of the body bigger areas of the body have less blood to flow, so you're gonna have filters just like a high level of those muscles and that way and less 

Muscles or organs the more that muscle or the more blood from watch right so these pre-capillaries would be opened up if you don't want to use that as much we have the way that we option points to exchange materials every time you see this sort of weird or weird that is actually another button That lots and lots and lots of that all over the place Apple areas are even more even more tiny than ar and not bad red oxygenated blood blue, oxygen blood exchange, Lab covered it but I'm just gonna give these diagrams for you and Election slides so that you have access to them. This is this is the capillary just doing that  Only just to allow like one time to go through so they're very very very small to order. You would actually continuously slightly smaller holes and there is virtually no holes at all my vessels so very very tight very very much here those different tablet types if you want a little bit more  Specifically these this is a nine minute video that's quite nice. Is that there are you remember these sort of discontinuous tab in areas where you want so this word for Mary is actually so same with the God we need to be able to have some weakness to get those  Nutrients easily like this want to be able to be very very late because we are actually trying to get really things. MAR is actually out produced so it's really important that we have a higher amount of like the marrow so that way blood cells are to get out of the marrow and into  so now I am going to ask this video 

And you wanna have a lot of fluid these the blind that processes called filtration fluid which is fluid also has some gases Black vessels vocabulary and interstitial space -e want to leave the 

, we want a lot of fluid to come back into the vein