Question

Observe a prepared histological specimen of thyroid tissue. Carefully draw a representative section and label a capillary (if visible), follicular cells, parafollicular cells, and thyroglobulin.

Answer 1

Thyroid gland is made up of follicles lined by cuboidal epithelium. Follicles vary in shape and size. Is follicle is filled with homogeneous pink colloid proteinaceous material primarily composed of thyroglobulin that has been produced by the follicular epithelial cells.

Parafollicular cells are present in relation to the follicles and also as groups in the connective tissue.

Some connective tissue is also present in intervals between the follicles. Capillaries are also present between the follicles.