Question

The two lobes of thyroid gland are joined by a horizontal connection known as

• A. Inter thyroidal connective
• B. Inter thyroidal commissure
• C. Intermediary lobe
• D. Isthmus

Answer 1

The correct option is D Isthmus

The thyroid isthmus is the part of the thyroid gland, that connects together the lower thirds of the right and left lobes of the thyroid gland. The thyroid isthmus measures about 1.25 cm. in breadth and the same in depth and usually covers the second and third rings of the trachea.

So, the correct answer is option D.