Immune system 1.Thymus (No.21) 2. Lymph node (No.6) 3. Spleen (No.22)

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Presentation transcript:

Immune system 1.Thymus (No.21) 2. Lymph node (No.6) 3. Spleen (No.22) 4. Tonsil (No.23)

Capsule Interlobular septa Incomplete lobule Cortex medulla Thymus: HEX40

Capsule Interlobular septa Incomplete lobule Cortex medulla Thymus: HEX100

Thymocyte Epithelial reticular cell Thymic corpuscle Thymus: HEX400

Spheroid or kidney shaped organ Hilum Cortex Medulla Lymph node

Capsule Cortex Lymphoid nodules Paracortical zone Cortical lymph sinuses subcapsular peritrabecular Lymph node: HEX40

Small lymphocytes Germinal center young lymphocytes reticular cells macrophages Lymphoid nodule

Postcapillary venules In the paracortical zone LC within the wall thick endothelial cell LC within the wall opening for LC enter LN

Lymph node:HEX400 cortical lymph sinuses (subcapsular)

Cortical lymph sinuses: peritrabecular sinuses

Afferent lymphatic vessel in the capsule: with valves

Efferent lymphatic vessels Blood vessels Hilum of lymph node

Pacinian corpuscle Nerve fiber bundle

Medullary cords Medullary sinuses Medulla of lymph node

Spleen

Capsule DCT Smooth muscle mesothelium Spleen

Trabeculae artery vein Spleen

White pulps Lymphatic sheath lymphatic tissue central artery Splenic nodule

White pulps Lymphatic sheath lymphatic tissue central artery Splenic nodule

Red pulps splenic cord Splenic sinusoid

Tonsil (腭扁桃体)

THE END