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.
Endocrine. Basic Definition: The Endocrine system includes the Thyroid, Thymus, Adrenal gland, and Pancreas which all have glands that secrete hormones, enzymes, and other material which protects against diseases, bacteria, and regulates the body's immune system.he Thyroid (3) is found on either side of the trachea. The Thyroid regulates the immune system and secretes. material to fight against bacteria and any other harmful thing that may enter the body. The Thymus (4 on picture directly above) is a Gland that is located on the surface of the heart.