The Lymphatic System.

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Presentation transcript:

The Lymphatic System

Functions of the Lymphatic System Drainage system Lipid Absorption from Small Intestine Produce & circulates Immune cells.

Open ended vessels – open when excessive fluid

Valves in lymphatic vessels prevent backflow of lymph.

Right Lymphatic and Thoracic duct

Un-encapsulated lymphatic tissues Lymphoid Tissues: Un-encapsulated lymphatic tissues Tonsils Pharyngeal Palatine Lingual Tonsil located in strategic locations

Lymphoid Tissues Tonsils

Lymphoid Organs Lymph Nodes Thymus Spleen

Lymph Node

Structure of a Lymph Node

Development of Lymphocytes

Lymph Node Histology

Lymph Node Histology2

The Thymus

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

The Spleen

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

The Spleen - histology

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