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.
Swollen lymph nodes. The lymphatic system is an important part of the body's immune system. It is made up of a network of lymph nodes and vessels which make and move substances that fight infection by destroying micro-organisms in the body. Examples of lymph nodes include the tonsils and adenoids.