What are the eight organs of the immune system? And what are they generally referred to as?
* adenoids (two glands located at the back of the nasal passage) * blood vessels (the arteries, veins, and capillaries through which blood flows) * bone marrow (the soft, spongy tissue found in bone cavities) * lymph nodes (small organs shaped like beans, which are located throughout the body and connect via the lymphatic vessels) * lymphatic vessels (a network of channels throughout the body that carries lymphocytes to the lymphoid organs and bloodstream) * Peyer’s patches (lymphoid tissue in the small intestine) * (a fist-sized organ located in the abdominal cavity) * thymus (two lobes that join in front of the trachea behind the breast bone) * tonsils (two oval masses in the back of the throat)
