The Cardiovascular System and Lymphatics System 。 Blood-Transports nutrients to and wastes from cells WBCs-Defend against infection Lymphatics-Transport interstitial fluid to blood Lymph nodes-Contain fixed macrophages The Cardiovascular System and Lymphatics System • Blood—Transports nutrients to and wastes from cells • WBCs—Defend against infection • Lymphatics—Transport interstitial fluid to blood • Lymph nodes—Contain fixed macrophages