What are the biggest differences between arteries,veins, and capillaries?

Question

What are the biggest differences between arteries,veins, and capillaries?

Answer 1

Directions of travel and flow rates typically. Arteries will carry oxygenated blood away from the heart, with the exception of the pulmonary artery which carries deoxygenated blood to the lungs. Veins will carry deoxygenated blood to the heart, with the exception of the pulmonary vein which carries oxygenate blood from the lungs. Capillaries are webs of tiny vessels that connect to organs and other types of tissues where oxygen and waste (CO2 mainly) are exchanged.  

Answer 2

The major differences between this blood vessels will be in terms of their thickness of the endothelial wall, the type of blood it carries, how and where it is pumped and the level of the pressure in these vessels. Arteries carry mainly oxygenated blood from the heart to the systemic regions (the whole body system). Due to the presence of oxygen and the distance the blood is pumped in these vessel, artery contains high blood pressure compared to any other blood vessels and this is why arteries posses thick endothelial wall. Veins carry mostly deoxygenated blood (non-oxygenated) from the systemic regions to the heart and pumped back to the lungs for gaseous exchange. Vein contains low blood pressure compared to other vessels due to the absence of oxygen and high content of carbon dioxide. The endothelial wall is slightly medium in size compared to arteries. Capilarries on the other hand is the connector between vein and arteries. It is the site where gaseous exchange will occur among the tissues. The endothelial wall is just one-cell thick due to the reason it can promote better exchange of gasses.

Answer 3

arteries carry blood away frm the heart for distribution to various parts of the body...arteries contain oxygenated blood(except pumlonary artery)....in arteries blood flows wid more pressure and jerks...arteries have thick,elastic walls and narrow lumen...arteries are widout valves...arteries are deep seated.....arteries retain their tubular form when these are empty or cut cross....

veins carry blood towards heart from various parts of the body,they are collecting vessels...veins contain deoxygenated blood(except pulmonary vein)...blood flows smoothly wid less pressure....these have thin,hardly elastic walls and a wide lumen...veins have valves to prevent back flow of blood....these are superficial...veins collapse when these are empty or cut cross........

capallaries are thin walled microscopic vessels which carry blood from arterioles to small veins or venules...each capillary consists of a single layer of endothelial cells...capallaries lie in close contact with the body tissue and due to thin walls,it permits exchange of gases,nutrients,secretions and waste materials between the blood and cells....the white blood cells sqeeze out thru the capillary walls into the surrounding tissue to attack invading bacteria.....the phenomenon of squeezing out of leucocytes is known as diapedesis....