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

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Presentation transcript:

The Lymphatic System

Roles of the Lymphatic System 1)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 1)Pharyngeal 2) Palantine 3) Lingual Tonsil located in strategic locations

Lymphoid Tissues

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

Structure of a Lymph Node

Derivation and Distribution of Lymphocytes

The Thymus

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

The Spleen

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

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