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The Lymphatic System

Explore how the lymphatic system aids immunity by draining excess fluids, filtering out pathogens, and producing lymphocytes. Learn about lymph nodes, vessels, tonsils, thymus, spleen, and appendix functions. Discover protective roles and organ locations.

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The Lymphatic System

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  1. The Lymphatic System Chapter 12 Lauren Buchele Chaz McRae

  2. Overview: Aids the body in immunity by taking excess fluid out of the blood and recirculating the blood.

  3. Lymph Nodes: • Help protect the body • Remove foreign material ( bacteria and tumor cells) • Produce lymphocytes that function in immune response • Actually collects the lymph

  4. Lymphatic Vessels • Form an elaborate drainage system that pick up excess tissue fluid: lymph • Just transports lymph • When fluid accumulates in the tissues it causes edema. (Swelling) • The type of tissue surrounding the vessels is stratified columnar.

  5. Tonsils: • Line the throat or pharynx • Trap and remove any bacteria or foreign pathogens entering the throat When the tonsils become infected (tonsillitis) halitosis occurs.

  6. Thymus: • Peak level functions at youth • Lymphoid mass down low in the throat overlying the heart in between the lungs • Produces hormones that carry out protective roles in the body The Thymus gland is located in the thoracic cavity cavity.

  7. Spleen: • Soft blood-rich organ that filters and cleanses blood of bacteria, viruses, and other debris • Most important function: destroy worn out red blood cells and return some of their breakdown products to the liver • Located in the left side of the abdominal cavity, just beneath the diaphragm

  8. Appendix: • A tube-like off shoot of the first part of the large intestine • Vestigial

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