Unit 12 Lymphatic System Unit 12 Lymphatic System

Unit 12: Lymphatic System

Unit 12: Lymphatic System Function: • Collects and transports interstitial fluids (extracellular) which helps rid the body of toxins, waste and other unwanted materials into the blood to then be filtered. • Prevents a build up of fluids surrounding cells in tissues

Unit 12: Lymphatic System Structures and Functions: 1. Lymph: Colorless liquid made of Water, Proteins, and Lymphocytes 2. Lymphatic Vessels: Collect Lymph and return to it to veins. Uses Peristalsis, One-Way Valves, and Muscle Contraction to circulate Lymph 3. Lymph Nodes: Filters the Lymph and removes impurities such as carbon, cancer cells, pathogens and dead blood cells; also produces Leukocytes and Antibodies 4. Spleen: Filters blood for the Lymphatic System and stores Lymphocytes and Macrophages to kill pathogens in blood. 5. Liver: Produces Lymph

Unit 12: Lymphatic System Disorders Splenomegaly – Swollen spleen due to infection. No symptoms? , pain, fatigue, anemia, frequent infections. Cause: ? Epstein-Barr Virus (Mono)

Unit 12: Lymphatic System Disorders Tonsillitis – Swollen tonsils due to draining bacterial infection in pharynx. (Tonsils are made of lymphatic tissue)

Unit 12: Lymphatic System Disorders Lymphedema – Blockage, radiation scarring, or cancerous lymph vessels/nodes cause tissue swelling.

Unit 12: Lymphatic System Disorders Filariasis (Elephantiasis) – Tropical parasitic worms invade the lymph nodes and block them.

Unit 12: Lymphatic System Disorders Lymphoma – Cancer of the lymphatic system.

• http: //www. youtube. com/watch? v=dn. Ww. Hth k. Gk. Y&feature=related