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. Warm up • Video- Lymphatic System http://www.youtube.com/watch?v=BX8fBlme9vQ

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

5. What is the Lymph System? It is a network of organs, lymph nodes, ducts and vessels that produce and transport lymph from the tissues into the blood stream.

6. Structures of the lymphatic system Lymph fluid • Clear, straw-colored • Fluid that flows throughout the lymph system. • Made of white blood cells- (Lymphocytes) to fight bacteria. 2.03 Remember the stuctures of the lymphatic system

7. Structures of the lymphatic system Lymph vessels • Closely parallel to blood vessels (veins) • Transports lymph fluid throughout body • Only flow in one direction 2.03 Remember the stuctures of the lymphatic system

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

9. Structures of the lymphatic system Lymph vessels • Lacteals • Specialized lymph vessels (capillary) in the villi of the small intestines • Absorb digested fat. 2.03 Remember the stuctures of the lymphatic system

10. 2.03 Remember the stuctures of the lymphatic system

11. Structures of the lymphatic system Lymph vessels • Lymphatic ducts • Large lymph vessels Right Thoracic Duct- Fluid from the upper chest neck and head. Thoracic Duct (Left Thoracic Duct) - Fluid from the rest of the body. 12

12. Structures of the lymphatic system • Lymph nodes • tiny, oval-shaped structures • Range in size from a pinhead to an almond- usually can’t be seen or felt. • Clusters in the neck, armpits, groin inside chest and abdomen. Lymph node

13. Structures of the lymphatic system Lymph nodes • Located all throughout the body. • There are many lymph nodes- they filter the lymph fluid and help produce white blood cells. 2.03 Remember the stuctures of the lymphatic system

14. Structures of the lymphatic system Lymph nodes When bacteria are recognized by the lymph fluid, the nodes produce more infection fighting WBC’s. This causes the lymph nodes to swell. 2.03 Remember the stuctures of the lymphatic system 15

15. 2.03 Remember the stuctures of the lymphatic system

16. 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

17. Structures of the lymphatic system Spleen • Largest Lymphatic structure • Sac-like mass • Located in the LUQ 2.03 Remember the stuctures of the lymphatic system

18. Structures of the lymphatic system Spleen • Fist shaped, purple • Normally can’t feel it. • Filters blood and recycles RBC’s. • Helps fight bacteria. • Becomes enlarged with mono and certain cancers- Lymphoma 2.03 Remember the stuctures of the lymphatic system 21

19. Structures of the lymphatic system Thymus gland • located in the upper, anterior chest • also an endocrine gland • Produces- T-Lymphocytes- these have a memory and remember how to fight an infection you have already been exposed to. 2.03 Remember the stuctures of the lymphatic system

20. Thymus gland • Shrinks byearly teen years. • Decreased thymus gland is thought to be related to decreased immunity inthe elderly. 2.03 Remember the stuctures of the lymphatic system

21. Processing • Labeling Activities 1 and 2, • Lymphatic System Review Questions 4- 11, Matching 1-4, • Philadelphia

22. 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