What are the glands that regulate thyroid hormones?

The size of thyroid gland is:

What structure is indicated by #8 on the diagram provided?

—————is incomplete development of the thyroid gland that results in primary congenital hypothyroidism.

No. 2 Represents

No. 3 Represents

Label the image number 6

No. 2 represents

What structure is indicated by #3 on the diagram provided?

What structure is indicated by #13 on the diagram provided?