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Chapter 37 - Chapter 37 The Lymphatic System and Immune...

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Chapter 37 The Lymphatic System and Immune Response
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Lymphatic System ¢ Lymphatic vessels ¢ Lymphatic tissues l Tonsils ¢ Primary lymphatic organs l Thymus and Bone marrow ¢ Secondary lymphatic organs l Lymph nodes, spleen
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Lymphatic System
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Lymphatic System ¢ Lymph l Fluid lost from the capillaries l Edema ¢ Functions of the lymphatic system: l Transport lymph to the blood vessels l Protects the body
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Lymphatic vessels ¢ Lymphatic capillaries ¢ Lymphatic collecting vessels ¢ Lymphatic trunk ¢ Right lymphatic duct - drains lymph from: l Head right upper extremity l Right thorax l Drains into right subclavian vein
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Lymphatic vessels ¢ Thoracic duct – drains lymph from: l Rest of the body l Drains into left subclavian vein ¢ Cisterna chyli ¢ Characteristic of the lymphatic vessels l Walls with 3 tunics l Presence of valves l Presence of abundant anastomoses
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Lymphatic vessels
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Primary lymphoid organs ¢ Bone marrow l Contain the stem cell that will give rise to all lymphocytes l Site of B cell differentiation or immunocompetency ¢ Thymus l Site of T cell differentiation or immunocompetency
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Thymus
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