Comparison of Blood and Lymph Vessels
by Joachim E. Zuther
The heart and blood vessels represent the main components of the circulatory system, which consists of an elaborate network of tubes throughout the body. The circulatory system involves the combined functioning of the heart, blood and blood vessels to deliver oxygen and nutrients to organ systems and tissues, and to remove waste products resulting from metabolism.
The lymphatic system is composed of an intricate system of lymphatic vessels and lymphatic tissues including lymph nodes, spleen and thymus. The main purpose of lymphatic vessels is to absorb and return lymph fluid from the body back to the blood, and to assist in the body’s immune function.