1. The Lymphatic System

2. Roles of the Lymphatic System 1)One-way drainage system 2) Lipid Absorption from Small Intestine 3) Produce & circulates Immune cells.

4. Valves in lymphatic vessels prevent backflow of lymph.

6. Right Lymphatic and Thoracic duct

7. Lymphoid Tissues: Un-encapsulated lymphatic tissues Tonsils 1)Pharyngeal 2) Palantine 3) Lingual Tonsil located in strategic locations

8. Lymphoid Tissues

9. Lymphoid Organs: Surrounded by fibrous capsule (encapsulated) Lymph Nodes Thymus Spleen

10. Lymph Node

11. Structure of a Lymph Node

12. Derivation and Distribution of Lymphocytes

13. Lymph Node Histology

14. Lymph Node Histology2

15. The Thymus

16. Behind the sternum (in anterior mediastinum) Where T cells Differentiate Involution (gets smaller) post puberty

17. The Spleen

18. Largest mass of lymphoid tissue in body Same functions for whole blood as lymph nodes for lymph

19. The Spleen - histology