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The Lymphatic System

The Lymphatic System. Roles of the Lymphatic System. One-way drainage system . 2) Lipid Absorption from Small Intestine. 3) Produce & circulates Immune cells. Valves in lymphatic vessels prevent backflow of lymph. Lymphoid Tissues: Un-encapsulated lymphatic tissues. Tonsils

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The Lymphatic System

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  1. The Lymphatic System

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

  3. Valves in lymphatic vessels prevent backflow of lymph.

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

  5. Lymphoid Tissues

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

  7. Structure of a Lymph Node

  8. Derivation and Distribution of Lymphocytes

  9. The Thymus

  10. The Thymus • Behind the sternum (in anterior mediastinum) • Where T cells Differentiate • Involution (gets smaller) post puberty

  11. The Spleen

  12. The Spleen • Largest mass of lymphoid tissue in body • Same functions for whole blood as lymph nodes for lymph

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