Lymphatic System. Plasma vs. Interstitial Fluid vs. Lymph.
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Transcript of Lymphatic System. Plasma vs. Interstitial Fluid vs. Lymph.
Lymphatic System
Lymphatic System
Plasma vs. Interstitial Fluid vs. Lymph
Functions: Transports Excess Interstitial Fluid Back to Bloodstream
• Lymphatic vessels collect lymph from loose connective tissue
• Carry fluid to great veins in the neck
• Fluid flows only toward the heart
Functions: Distributes hormones, nutrients, and waste products
Functions: Houses Lymphocytes
B- and T- Lymphocytes
B- lymphocyte T-lymphocyte
Thymus Gland
B- and T- Lymphocytes
B and T cells
Cytotoxic T cell
T cells attacking a tumor cell
Helper T- Lymphocytes
Helper T Cells
HIV attacking helper T-cell
Antibodies
Cytotoxic T- Lymphocytes
Cytotoxic T cell
Function: Generates an Immune Response
Components of the Lymphatic System
• Lymph
• Lymphatic Vessels
• Lymphocytes
• Lymphoid Nodules (Tonsils)
• Lymphoid Organs
Lymphatic Vessels
• Lymph Capillaries
• Lymphatic Trunks
• Lymphatic Collecting Ducts
• Lymphatic Ducts
Lymph Capillaries
Lymphatic Capillaries
Lymphatic Capillaries and Lymphatic Vessels
Lymphatic Trunks
Lymphatic Ducts
Lymphatic Ducts
Lymphatic Ducts
Lymphoid Nodules (Tonsils)
Figure 20.9
Peyer’s Patches and Tonsils
Swollen Tonsils
Figure 20.9
Swollen Tonsils
Lymphoid Organs
• Lymph Nodes
• Thymus Gland
• Spleen
Figure 20.9
Lymph Nodes
Figure 20.3
Lymph Nodes
Lymph Nodes
Lymph Nodes
Lymph Node Histology
Lymph Nodes in Breast
Thymus Gland
Thymus Gland
Thymus Gland
Spleen
Spleen
Spleen
Spleen
Spleen
Spleen
Spleen Histology
Disorders of the Lymphatic and Immune Systems
• Mononucleosis – viral disease caused by Epstein-Barr virus• Attacks B lymphocytes
Disorders of the Lymphatic and Immune Systems
• Hodgkin’s disease – malignancy of lymph nodes
• Non-Hodgkin’s lymphoma • Uncontrolled multiplication and metastasis of
undifferentiated lymphocytes