2.03 Remember the structures of the lymphatic system

1. 2.03 Remember the structures of the lymphatic system

2. 2.03 Remember the structures of the lymphatic system What are the structures of the lymphatic system? 2.03 Remember the stuctures of the lymphatic system

3. Structures of the lymphatic system • Lymph fluid • Lymph vessels • Lymph nodes • Lymph glands 2.03 Remember the stuctures of the lymphatic system

4. Structures of the lymphatic system • Lymph fluid • straw-colored • Clear • Contains: • Water • Granulocytes • Lymphocytes 2.03 Remember the stuctures of the lymphatic system

5. Structures of the lymphatic system • Lymph vessels • parallel to blood vessels • transport lymph • Carries digested food, oxygen, hormones to cells • Excretes urea and carbon dioxide away from the cells 2.03 Remember the stuctures of the lymphatic system

6. Structures of the lymphatic system Lymph vessels parallel to blood vessels 2.03 Remember the stuctures of the lymphatic system

7. Structures of the lymphatic system • Lymph vessels • Lacteals • Specialized lymph vessels in the small intestines, absorb digested fats and transport them to the circulatory system 2.03 Remember the stuctures of the lymphatic system

8. Structures of the lymphatic system • Lymph vessels • Lymphatic ducts • Large lymph vessels • Thoracic duct • Also called the left lymphatic duct • receives lymph from the left side as pictured • Right lymphatic duct • Lymph flows only in one direction (body organs to R or L subclavian veins to superior vena cava of the heart) 2.03 Remember the stuctures of the lymphatic system

9. Structures of the lymphatic system • Lymph nodes • tiny, oval-shaped structures • range in size from a pinhead to an almond • Recognize a foreign substance and release lymphocytes, reach the blood and anitbodies are made to attack the microorganism Lymph node 2.03 Remember the stuctures of the lymphatic system

10. Structures of the lymphatic system • Lymph nodes • Where are lymph nodes located? • Why are there so many? • If the amount of foreign substance is too large and cannot be destroyed then the lymph nodes become enlarged its known as adenitis 2.03 Remember the stuctures of the lymphatic system

11. Structures of the lymphatic system • Tonsils • 3 pairs • masses of lymphatic tissue • Palatine tonsils • sides of throat • Adenoids • upper throat • Lingual tonsils • back of tongue 2.03 Remember the stuctures of the lymphatic system

12. Structures of the lymphatic system Say “aahhh” Why this is helpful? 2.03 Remember the stuctures of the lymphatic system

13. Structures of the lymphatic system • Spleen • Sac-like mass of lymphatic tissue • Located in the LUQ • Forms lymphocytes and monocytes; blood passing through is filtered • Destroys old erythrocytes 2.03 Remember the stuctures of the lymphatic system

14. Structures of the lymphatic system Thymus gland • located in the upper, anterior chest • also an endocrine gland • Produces T-lymphocytes 2.03 Remember the stuctures of the lymphatic system

15. Structures of the lymphatic system Thymus gland What is unique about the thymus gland? 2.03 Remember the stuctures of the lymphatic system

16. 2.03 Remember the structures of the lymphatic system What are the structures of the lymphatic system? 2.03 Remember the stuctures of the lymphatic system