In the respiratory tract, does the thyroid have connective tissue?

Yes, the thyroid does have connective tissue. The thyroid gland is surrounded by a thin layer of fibrous connective tissue known as the capsule. This capsule extends into the interior of the gland, dividing it into lobules. Each lobule contains many follicles, which are the functional units of the thyroid gland. The spaces between the follicles and lobules are filled with a loose connective tissue that contains blood vessels and nerves.