The Blood Vessels Consist Of Arteries, Arterioles, Capillaries, Venules, And Veins. All Blood Is Carried In These Vessels. The Arteries, Which Are Strong, Flexible, And Resilient, Carry Blood Away From The Heart And Bear The Highest Blood Pressures. Because Arteries Are Elastic, They Narrow (Recoil) Passively When The Heart Is Relaxing Between Beats And Thus Help Maintain Blood Pressure. The Arteries Branch Into Smaller And Smaller Vessels, Eventually Becoming Very Small Vessels Called Arterioles. Arteries And Arterioles Have Muscular Walls That Can Adjust Their Diameter To Increase Or Decrease Blood Flow To A Particular Part Of The Body.

KEYWORDS

adventitia arteria arterioles artery blood bloodflow capillaries capillary endothelium lamina lumen muscle pericyte sanguin sanguineo smooth tissues vaisseau valve vas vaso vein veins venules vessel