Want this question answered?
Arterioles.
arterioles
Arterioles take blood from the arteries to the capillaries. Venules take blood from the capillaries to the veins.
artery, vein, arterioles, venules, capillaries
Arteries enter arterioles enter capillaries enter venules enter veins.
Blood flows from the heart and aorta into large vessels called arteries, these arteries decrease in size as they move into tissues and are then called arterioles with just a few layers of cells. Arterioles then become capillaries that have a single cell layer. Capillaries then empty into venules, which then enter veins and return blood back to the heart to start the process over again!
I believe the first vessel is the pulmonary trunk which brings the deoxygenated blood to the pulmonary arteries and so on....
Capillaries send blood to both arteries and veins.
Capillaries
The smallest arteries of the human body are the arterioles, which supply blood into the capillary network from the main arteries (artery-->arteriole-->capillary-->venule-->vein). They hold plasma and filtrates, and are usually only wide enough to hold a single red blood cell at a time (in some cases, they are smaller than a RBC).
Blood pressure is highest in the arteries.
the walls of lymphatic vessels are similar to those of veins