Endocrine System

Thyroid and Parathyroid Glands

Where are the thyroid hormones stored in the thyroid gland?

Thyroid hormones are stored in the spherical sacs called follicles. The thyroid follicles, microscopic spherical sacs, are composed of a single layer of cuboidal epithelium tissue. The thyroid hormones are stored in a gelatinous colloid.


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