Follicular cells of thyroid gland : summary
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Topics
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Follicular cells
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Secretion
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T3 and T4
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Shape and size of cell
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It is smaller than the parafollicular cell. The shape of
the cell vary according to functional state of gland: from simple squamous to
low columnar epithelium
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Staining
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It takes more staining
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Exposure to luminal surface
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It is exposed to luminal surface
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Nuclei
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It contains comparatively dark nuclei with two or three
prominent nucleoli
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Golgi complex
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Golgi complex are supranuclear in position
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Secretory vesicles
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Few and Present in apical region
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rER
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Present basally
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Lysosome
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Abundant
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Endocytotic
vesicles or colloidal resorption droplets
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Present in the apical region of cell
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Microvilli
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Present
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Development
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Thyroglossal duct
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Derived from
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Endoderm
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