Spider monkeys are among the largest New World monkeys; black-headed spider monkeys, the largest spider monkey, have an average weight of 11 kilograms (24 lb) for males and 9.66 kg (21.3 lb) for females.
IMMUNE SYSTEM. -responsible for protecting the body against bacteria, viruses, fungi, toxins, parasites, and cancer. -works with organs of lymphatic system, thymus, spleen, and lymph nodes, to clear body of these disease causing agents. LYMPHATIC SYSTEM.
The lymphatic system maintains fluid levels in the body. Bacteria and other microbes are taken up by the lymph and delivered to the lymph nodes for destruction. The spleen and thymus are organs that filter the blood. 1  The lymphatic system is a network of tubes throughout the body that drains fluid (called lymph) from tissues and empties it back into the bloodstream. The main roles of the lymphatic system include managing the fluid levels in the body, filtering out bacteria, and housing types of white blood cells.