Arteries vs. veins - what's the difference? (video) | Khan Academy
Arteries carry oxygenated blood away from the heart, these are the thick-walled muscular tube, while Veins carry deoxygenated blood towards. Veins and arteries are major players in the circulatory system of all vertebrates. They work together to transport blood throughout the body, helping to oxygenate . There are a number of differences between veins and arteries. Veins: carry blood from the tissues of the body back to the heart are usually positioned.Operation Ouch - Blood Vessels - Science for Kids
So right when it gets pumped away from the heart, it'll be right over here. It gets pumped through the aorta, and you can see the aorta branches, so some blood can go up towards your head, and if it didn't, you would pass out and die. And then a lot of the blood goes down towards the rest of your body. And that, indeed, is the most oxygenated blood.
And so it'll flow through your body. And these arteries will keep branching and branching into smaller vessels, all the way until they form these very small branches. And it's that place, especially, where they will lose a lot of their oxygen to the fluid and the cells around them. And then the blood is less oxygenated.
And then even though deoxygenated blood is not blue, it often gets depicted as blue in a lot of diagrams. So I will do the same. And these vessels start building into your veins. And these really small vessels that really bridge between arteries and veins, where a lot of the gas and nutrient exchange occurs, these are called capillaries.
What is the difference between an artery and a vein? | MyTutor
And so after going through the capillaries, the blood will then come back to the heart and now it's coming towards the heart through the veins. It comes into the right atrium, then the right ventricle.
Then that gets pumped towards the lungs. And this is the exception to the first incorrect definition of arteries and veins that we looked at. This right over here, is an artery. Even though it's carrying less oxygenated or deoxygenated blood, it's an artery because it's carrying blood away from the heart. But in this case, it's not carrying it to the rest of the body, it is carrying it to the lungs. That is why it is called the pulmonary artery, even though it's carrying less oxygenated blood.
So that it goes to the lungs and then, in the lungs, there's more gas exchange that occurs. The blood gets oxygenated and then it comes back to the heart.
What’s the Difference Between Veins and Arteries?
And so it comes back to the heart in these vessels right over here, and that even though these are carrying highly oxygenated blood, these are considered veins because they're carrying blood towards the heart.
So these are pulmonary veins. And then the cycle starts again. The pulmonary veins bring the oxygenated blood into the left atrium and the left ventricle, and then that pumps it to the rest of the body to the aorta, for your systemic circulation.
You have your pulmonary circulation, which circulates the blood to, through and from the lungs. And you have your systemic circulation, which takes the blood to and from the rest of the body. So now that we have this main distinction between arteries and veins, what are some other interesting things that we know about it?
Well one thing to keep in mind is that since arteries are being pumped directly by the heart towards the rest of the body, they have high pressure. I'll write that in caps. And so if you were to have an accident of some type, which you do not want to have, and you were to accidentally cut an artery, because of that high pressure, it would actually spurt blood, a lot more than if you were to cut a vein.
And most of the times where you get a cut, you're really just cutting capillaries. Like if you were to prick your finger, it's usually a series of capillaries that get cut, and that's why the blood would come out very very slowly. Now if arteries are high pressure, veins are low pressure.
Relationships between the arteries and veins and the connective tissue system in the human orbit.
And one way to think about it is the arteries, the blood is being pumped directly by the heart. These vessels are channels that distribute blood to the body. These systems of tubes are either: What are the different types of arteries? There are three types of arteries. Each type is composed of three coats: Elastic arteries are also called conducting arteries or conduit arteries.
They have a thick middle layer so they can stretch in response to each pulse of the heart. Muscular distributing arteries are medium-sized. They draw blood from elastic arteries and branch into resistance vessels. These vessels include small arteries and arterioles.
Arterioles are the smallest division of arteries that transport blood away from the heart. They direct blood into the capillary networks. There are four types of veins: Deep veins are located within muscle tissue.
They have a corresponding artery nearby. Each lung has two sets of pulmonary veins, a right and left one. Systemic veins are located throughout the body from the legs up to the neck, including the arms and trunk.
Difference Between Arteries and Veins (with Comparison Chart and Similarities) - Bio Differences
They transport deoxygenated blood back to the heart. Use this interactive 3-D diagram to explore an artery. Use this interactive 3-D diagram to explore a vein. Anatomy of veins and arteries The walls of veins and arteries are both made up of three layers: Tunica adventitia tunica externa is the outer layer of a blood vessel, including arteries and veins. These fibers enable the veins and arteries to stretch a limited amount.
They stretch enough to be flexible while maintaining stability under the pressure of blood flow.