LYMPHATIC SYSTEM

1
LYMPHATIC SYSTEM

• Chapter 20

2
FUNCTIONS

• Drain tissue fluid
• House phagocytic cells and lymphocytes
• Absorb digested fats via lacteal

3
COMPONENTS

• Lymphatic vessels
• Lymphatic cells and tissues
• Lymphatic organs

4
LYMPH VESSELS
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LYMPHATIC VESSELS
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LYMPHATIC VESSELS

• Lymph capillaries
• Lymphatic collecting vessels
• Lymphatic trunks
• Lymphatic ducts

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LYMPHATIC VESSELS

• Right lymphatic duct
• Right subclavian
• Thoracic duct
• Cisterna chyli
• Left subclavian

8
LYMPH CELLS AND TISSUE
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LYMPHATIC CELLS AND TISSUE

• Lymphatic cells
• Lymphocytes
• Macrophages
• Reticular Cells
• Dendritic cells
• Lymphoid Tissue

10
LYMPH ORGANS
11
LYMPH ORGANS

• Lymph nodes
• Inguinal region
• Axillary region
• Cervical region

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LYMPH ORGANS

• Lymph node structure
• Capsule
• Trabeculae
• Cortex
• Medulla
• Afferent lymphatic vessels
• Efferent lymphatic vessels

13
LYMPH NODE
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OTHER LYMPH ORGANS

• Spleen
• Tonsils
• Thymus gland
• Peyers patches

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SPLEEN
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TONSILS
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THYMUS GLAND
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Aggregates of Lymph Tissue

• Appendix
• Peyers Patches

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PEYERS PATCHES
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Aggregates of Lymph Tissue

• Appendix
• Peyers Patches
• MALTmucosa-associated lymphatic tissue

21
Control and Rate of Flow

• New lymph
• Valves
• Muscular pump
• Respiratory pump
• Artery pulsations
• Peristalsis

22
DISORDERS OF THE LYMPHATIC SYSTEM

• Buboes
• Elephantiasis
• Caused by a parasitic worm known as Wucheria
  bancrofti
• Hodgkins disease
• Characterized by Reed-Sternberg cells
• Lymphoma
• Tumor of lymphoid tissues
• Tonsillitis
• Inflammation and congestion of tonsils usually
  due to a bacterial infection