systemic circulation

 We have to really focus on the systemic circulation right, so the whole point was to pick up oxygen in order to deliver it to our tissues so we’re gonna zoom in into the systemic circulation which is all of this bottom part. I have two different the same thing on the bottom part is stomach circulation right, so that’s those that are going to the cell tissues and organs of our body up into four different questions so the first is why and how does blood go to the tissues we actually just kind of answer that so that’s gonna be that systemic circulation The blood to the tissues, this will be done via arteries and ar, Cheerios blood exchange materials via the capillaries and finally how does blood travel for the tissues back and we’ll see that is gonna be the veins and then tissues already answered that but this is just another way of looking at it right, so we need to deliver oxygen from the heart  The rest of the body branches, the descending aorta to the thoracic cavity organs as well as lower legs et cetera and then we have this before of the order that comes up and that’s going to form the carotid artery so we’re thinking about and also the subclavian Htoo Htoo that go more towards the right, so that’s gonna be our head in our arms  if you actually look at some of the vessels down in the lower portions of the thoracic/lower limbs, you’ll actually start to see other types of vessels so for example, here, this is gonna be a stomach/intestines and then you can see that liver, so there is actually a thing called hepatic portal that connects the intestines to the liver, and it’s actually what it’s doing. Is it taking nutrients right from the intestines the nutrients get digested so we’re talking about glucose sugar, right strips of carbohydrates, as well as acids that are broken down from proteins  so at least different types of nutrients via the hepatic portal transferred to the liver one for processing and also for storage liver is a big storage site or glucose. Glucose is actually stored. If you see this will feel very really the renal artery into the kidneys and the renal veins, the blood away from the kidneys, so the kidneys are really really important site and they are going to filter out  Waste products they’re also going to fill out extra water for electrolytes. If you have too much water or too many electrolytes in your system, the kidneys will actually filter that out and you’ll extreme it from the body via urine so that urine is kind of fill out filter that isn’t here, but I do want  Learn and 40 is that there is also going to be a Shun vessel to the spleen is gonna be a site actually filter also filter but instead of filtering out waste products are these small things like water and electrolytes what your filtering out are pathogens like bacteria, as well as damage red blood cells are white blood cells  White or red blood cells filtered out in the bleed cells. We’re thinking about much larger things right that gets filtered up this week so those are the many reasons why blood needs to go to the tissues, and then the one thing that I haven’t really written here of course blood has to return to the heart in order to exchange that carbon dioxide it’s not picked up or oxygen in the pulmonary circuits  so one major thing that you noticed as blood travels away from the hearts in this stomach circuit is that pressure decreases, so that’s what is showing so we have pressure on. We are getting farther from heart and returning back to the heart rate as the blood leaves. The heart and the vena cava is the blood returns to the heart and furthest aware , the pressure and the diastolic pressure systolic pressure is corresponding to ventricular cyst and ventricular diastole for the relaxation of the heart that is going to be lower. Individual should be around 120 where the diastolic might be around and you ventricular pressure with the diastolic pressure, what you’ll get is something called the arterial pressure, so that’s gonna be the average between the systolic and the diastolic, but from the elastic arteries outwards to the capillaries see that the pressure drops a lot and then by the time we’re at the vena cava by the time, we’re returning to the heart , the pressure is basically zero so very very little get back to the heart a lot of factors that go into regulating blood flow and blood pressure so this is some of them for example diameter, total cross-sectional area, average, blood pressure and then velocity of blood flow she can think of sort of speed which is flowing, so in your handouts, you can go ahead and answer question one looking at some of these  It’s right, so what we noticed for the diameter is the diameter goes large right in the arteries, small and the capillaries and then will come back and get larger. Once we return to the via cross. Total cross-sectional area of the arteries is low or small, then in the capillaries, it gets large or high  And then back to back total. We’re just trying to write down the rules for now so Covered it’s almost time as it starts and then velocity flow of muscle diameter. High flow. High velocity slows down and then speed back up. A little bit velocity area is to slow in order to exchange .