Veins and arteries are located next to each other due to an evolutionary phenomena known as counter-current heat exchange. Your body tries to maintain an optimum temperature of 37oC, and since the body's core (chest area) delivers the blood to the extremeties, that blood may risk coming back cold. And if the blood happens to come back to the heart colder, that would not be achieving homeostasis. Your body is made to fight entropy. So what evolution decided is to put veins and arteries together so that heat exchange can happen through arteries and veins going to opposite directions. Arteries pump blood away from the heart and veins bring blood back to the heart, since they are going in opposite directions, they can exchange heat making the veins carry back some heat back to the heart, thus the naming "counter current heat exchange".
The Renal vein/arteryRenal Arteries (to) and Renal Veins (from)
Arteries drain (pump blood) into veins. Veins drain into your lungs and heart to be re-oxygenated. (This is not true for veins and arteries to and from your lungs.)
blood travels away from the heart through arteries and blood travels to the heart through the veins
Exactly i also cannot say but its because arteries- the blood vessels are thicker as compared to veins. Moreover the veins are more of superficially located as compared to arteries. We can also see the arteries though, look at the wrist joint of your hand (In most people you can see) you will see 2 thick lines running towards your elbow, but it will quickly disappear. These are nothing but the arteries.
arteries.
The Renal vein/arteryRenal Arteries (to) and Renal Veins (from)
Arteries and veins can be different sizes, because large arteries branch into smaller arteries, which branch into capillaries. These capillaries branch into small veins, which branch into large veins. So yes, they can be (and usually are) the same size if (I am surmising this) they are the same distance from the capillaries.
In the veins and venules at any given time.
a large network of capilleries.
Capillaries are located between arteries and veins. They are found throughout the body.
the three blood vessels are the Veins capillaries Arteries the arteries.
Arteries drain (pump blood) into veins. Veins drain into your lungs and heart to be re-oxygenated. (This is not true for veins and arteries to and from your lungs.)
You have the aorta, large and small arteries, capillaries and veins in the systemic circulation. You have the pulmonary aorta, arteries, capillaries and veins in the venous system. The blood pressure in the systemic circulation is much greater and hence the vessels are thicker there.
Yes, they are part of it, including the arteries and the capilaries.
Yes, they are part of it, including the arteries and the capilaries.
Cellulose is what surronds veins and arteries.
Veins do not pulsate Arteries pulsate Veins can easily collapse Arteries do not collapse (except in shock) Veins contain valves Blood pressure is low in the veins and higher in the arteries