Arterioles take blood from the arteries to the capillaries. Venules take blood from the capillaries to the veins.
Arteries - arterioles - capillaries - venules - veins - back to the heart...
Capillaries, they are the smallest of a body's blood vessels and part of the microcirculation. Capillaries are 5-10 μm in diameter and connect arterioles and venules and enable the exchange of water, oxygen, carbon dioxide, nutrients and waste chemical substances between blood and surrounding tissues.
Arterioles carry blood in the direction away from the heart. The order of vessels from the heart is: arteries>arterioles>capillaries>venules>veins.
Yes, the highest in the aorta and larger elastic arties, and decreses as the arteries branch and blood travels farther from the heart.Blood pressure drops significantly in the arterioles and steadily decreses through capillaries, venules, and veins, and drops to zero in the right atrium.
Small postcapillary venules consist entirely of endothelium just like capillaries (the larger venules have smooth muscle and thin externa as well). Also both capillaries and venules have no elastic tissues. Postcapillary venules are extremely porous which makes them more like capillaries then veins, and fluid and WBC's move easily into the bloodstream through these walls.
Arterioles are the small arteries that lead into the capillaries, which connect to cells in the body. Venules are the small veins that the capillaries flow back into, leaving the cells.
Renal vein It is not renal vein. It is venules. renal vein is only at one point of the body, were talking capillaries; which are all over the body.
cappillaries==============The smallest veins in the body are the venules. Capillaries join venules and arterioles (the smallest arteries) together. Arteries carry the blood from the heart around the whole body; while veins carry the blood back to the heart. They are joined by the capillaries, where the most important actions happen.More information in related links.
Capillaries lead to the smallest venules. The capillaries connect arteries and veins.