The lymphatic system helps the body with fluid exchange from the blood vessels, absorbs and transports fats, and removes pathogens. The lymph vessels run alongside the blood vessels in the cardiovascular system. These small vessels contain lymphatic fluid that circulates when the body moves, since there is no organ pumping the fluid through like the heart in the circulatory system. It is important to move the body so that disease can be removed from the body.
The lymph fluid flows through the lymph vessels to lymph nodes that are found throughout the body. The lymph nodes encapsulate any toxins or foreign pathogens and send them out of the body through sweat or excretion. When a lymph node is dealing with a foreign substance it may become swollen and sensitive to the touch. Common locations of lymph nodes include the throat, armpit, and inguinal area.
The spleen helps the lymph system by functioning as a large lymph node and filtering out toxins. The thymus produces lymph cells called lymphocytes that support the lymph organs.