What is the difference between arteries veins and capillaries?

Answer 1

Arteries always carry blood away from the heart. They also carry only oxygenated blood except for the pulmonary artery. They have thick walls due to the pressure created.

Veins always carry blood towards the heart, they mostly carry de-oxygenated blood except for the pulmonary vein. Vein walls are not so thick.Capillaries are extremely small and its walls are only one cell thick. They join the organ to the vein or the artery, and join the pulmonary vein and pulmonary artery at the lungs.

Answer 2

Arteries- carry blood away from the heart. (I like to think Arteries Away.)

Veins- carry blood to the heart.

Capillaries- connect veins and arteries.
Arteries are the tubes or vessles which carry the blood away from the heart once the blood has been oxygenated by the lungs. When it leaves the heart, it will begin the systematic circut, where the arteries get smaller and smaller, and become capillaries. Capillaries are smaller extensions of arteries and veins, supplying blood tho the bodies extremities. When the arteries deposit the oxygen and other nutrients through the capillaries, the blood then moves to the veins, which will carry the blood back to the heart. The veins are made from all the capillary branches moving back to gether. Veins have lower pressure than arteries, and also carry the deoxygenated "blue" or dark red blood, which will turn back to bright red once the blood is replenished in the heart, where the process starts again. So, * Arteries are the thick tubes carrying oxygenated blood from the heart to the extremities and organs, * Capillaries are the fine branches of arteries or veins which supply blood to the bodies extremities, * and veins are the thinner tubes carrying the deoxygenated blood back to the heart In other words:

Arteries: carry rich blood from the heart

Veins: carry poor blood to the heart

Answer 3

Ariteries carry blood away from the heart.

Veins carry blood back to the heart, also they have valves to prevent backflow of blood

capillaries are the smallest of the blood vessels that connect small arteries and small veins.

Answer 4

Arteries are the high-pressure side of the vascular system - they are the vessels that are distributing oxygenated blood about the body.
Veins are the low-pressure side of the vasular tree. Veins collect the deoygenated blood, and return it to the heart and lungs.

Capillaries are a network of tiny vessels that provide a junction between the arteries and veins.