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Objective English By Hari Mohan Prasad Pdf Free
Search form Search. Book navigation Immunology. Cardiovascular Medicine. Respiratory Medicine. Renal Medicine.
Gastrointestinal Medicine. Hematology and Oncology. Musculoskeletal System. Basic Concepts.
Genetic Disorders. Thyroid Histology.
Histology of thyroid gland and it's unique structure Thyroid follicle
Basic Components Thyroid Follicles: These spherical structures are the basic functional units of the thyroid gland that produce thyroid hormones. They are of variable size and are tightly packed, composing the bulk of the Thyroid Gland. Thyroid Follicular Epithelial Cells: These compose the simple cuboidal epithelium which forms the outside layer of each thyroid follicle.
They play a key role in both the biochemical synthesis and regulated secretion of thyroid hormones. Thyroid Colloid This is the amorphous, acellular, proteinacious center of each thyroid follicle and is largely composed of thyroglobulin.
Parafollicular Cells are not involved in thyroid hormone synthesis or regulation and instead control synthesis and regulation of calcitonin. Thyroid Capsule A fibrous capsule encloses the entire thyroid gland. From it extends thin collagenous septa which divide the thyroid follicles into lobules.