Blood pressure decreases from aorta to vena cava
Velocity lowers from aorta to capillaries, then increases to vena cava
Flow is same at all levels
Arterioles have large impact on directing flow to various capillary beds per their needs
Arteriole wall is smooth muscle
Metarterioles act as bypass channels and regulate flow into capillary beds.
Tunica adventitia – outermost
Tunica media – thick