LYMPHOID TISSUES AND ORGANS SCATTERED THROUGHOUT THE BODY
- LYMPH NODES: thousands are located throughout the body. They are responsible for removing foreign material such as bacteria, viruses, cell debris, proteins, etc, from the plasma (clear water) as it returns to the blood capillaries for re-circulation in the body.
- SPLEEN: located on the left side of the abdominal cavity and extends to curl around the anterior aspect of the stomach. It is a blood rich organ that filters blood. The spleen filters and cleans blood of bacteria, viruses and other debris. It also stores platelets, acting as a blood reservoir.
- THYMUS: found low in the throat overlying the heart. Functions at peak levels in youth as it becomes congested with fat, and less active in older persons. It produces hormones (thymosin and others) that function in the programming of certain lymphocytes so they can carry out their protective role in the body.