For descriptive reasons, I have divided the circulatory system into two main parts: the blood circulatory system and the lymphatic system. The blood circulatory system consists of the heart, which acts as a pump, and the blood vessels, through which the blood circulates. The lymphatic system consists of lymph nodes and lymph vessels through which colorless lymph flows. There is three times more lymph fluid than there is blood in the body. Lymph takes up waste products from the cells and removes them from the body. The lymphatic system is the primary circulatory system used by all immunological cells: macrophages, T-cells, B-cells, lymphocytes, etc. An obstruction-free lymphatic system is necessary to maintain homeostasis. Additional health information . . . For information related to specific disorders, please click on the appropriate link below: Digestive System Mouth Stomach Pancreas Liver Gallbladder and Bile Ducts Intestines Circulatory System Coronary Heart Disease High Cholesterol Poor Circulation, Enlargement of Heart and Spleen, Varicose Veins, Lymph Congestion and Hormonal Imbalance   Respiratory System Urinary System Nervous System Bones Joints Reproductive System Skin For a list of Frequently Asked Questions related to common health issues (101 pages in PDF format), please click here.