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Questions and Answers
What are thyroid follicles?
What are thyroid follicles?
- Cells that produce thyroid hormones (correct)
- Blood vessels surrounding the thyroid
- Structures filled with colloid (correct)
- Nerves connecting the thyroid to the brain
What is found inside thyroid follicles?
What is found inside thyroid follicles?
Thyroid colloid
What is the function of follicular cells?
What is the function of follicular cells?
To produce thyroid hormones
What are parafollicular cells also known as?
What are parafollicular cells also known as?
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Study Notes
Thyroid Gland Histology
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Thyroid Follicles
- Basic structural units of the thyroid gland.
- Spherical structures composed of follicular cells surrounding a central cavity.
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Thyroid Colloid Inside Follicle
- Gel-like substance located within the thyroid follicles.
- Contains thyroglobulin, a precursor to thyroid hormones T3 (triiodothyronine) and T4 (thyroxine).
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Follicular Cell
- Cuboidal to columnar epithelial cells that line the thyroid follicles.
- Responsible for the synthesis and secretion of thyroid hormones.
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Parafollicular Cell
- Also known as C cells, situated between the thyroid follicles.
- Produce calcitonin, a hormone that regulates calcium homeostasis in the body.
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