Lymphatic System and Immunity
Lymphatic System and Immunity
Page 4
Introduction to the Lymphatic System
Contributes to homeostasis by draining interstitial fluid and defending against diseases.
Immune system protects the body from pathogens, UV rays, toxins, and injuries.
Page 6
Components of the Lymphatic System
Includes lymph nodes, vessels, capillaries, and organs like the thymus and spleen.
Structures such as germinal centers, lymphoid sinuses, and lymphatic vessels are part of the system.
Page 8
Functions of the Lymphatic System
Drains interstitial fluid to prevent swelling.
Transports dietary lipids and fat-soluble vitamins.
Initiates specific immune responses against microbes and abnormal cells.
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Primary and Secondary Lymphatic Organs
Primary organs: Red bone marrow and thymus where stem cells mature.
Secondary organs: Lymph nodes, spleen, and lymphatic nodules for immune responses.
Page 17
Thymus
Location, structure, and function of the thymus in maturing T cells.
Process of T cell maturation, migration, and aging in the thymus.
Page 19
Lymph Nodes
Distribution and quantity of lymph nodes in the body.
Major concentrations of lymph nodes in areas like mammary glands, axillae, and groin.
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Structure of Lymph Nodes
Detailed anatomy of lymph nodes including capsules, trabeculae, sinuses, and lymphatic vessels.
Presence of B-lymphocytes, T-cells, and lymphatic valves within lymph nodes.