TY - CHAP M1 - Book, Section TI - Circulatory System A1 - Phillips, Raymond E. PY - 2021 T2 - Venous Insufficiency AB - The circulation is a continuously moving stream of blood that supplies the tissues with nutrients and oxygen and removes the by-products of metabolism from the tissues. Movement of blood depends upon pressure; that is, a force is applied to one portion of the system that drives the fluid contained within into another portion. The pressure involves four components of the circulatory system. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/03/28 UR - accesscardiology.mhmedical.com/content.aspx?aid=1175311560 ER -