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12 Cards in this Set
- Front
- Back
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Thymus
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A bilobed organ where T cells develop immunocompetence
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Location of thymus
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Mediastinum
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The thymus is surrounded by?
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A protective connective tissue capsule
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Trabeculae
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extension of capsule; divides lobes into lobules
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Trabeculae (latin)
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Little beams
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Cortex (thymus)
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-Deeply stained
-Consists of highly packed lymphocytes and epithelial cells "reticular epithelial cells" |
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Medulla (thymus)
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-Lightly stained
-Reticular epithelial tissue -Scattered lyphocytes -Thalamic (Hassal's) corpuscles |
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Thalamic (Hassal's) Corpuslces
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Concentric layers of reticular epithelial cells, filled with keratohyalin granules- function unknown
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How does the thymus function in immunity?
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Has lymphocytes, one type of white cell, which in turn is either a T cell or B cell depending on its role in immunity
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Thymic hormones help in the formation and proliferation of what type of cells?
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T cells- produce hormones and reticular epithelial cells form
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T cell
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Type of white blood cell
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Examples of thymic hormones
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Thymosin
Thymic humoral factor (THF) Thymic factor Thymopoietin |
