Page 64 - Endokrin Sistem Histolojisi-Dr. Öğr. Üyesi Tuğçe Önel

The inferior parathyroid glands (and the thymus) are derived

from the third branchial pouch; the superior glands, from the

fourth branchial pouch.

Normally, the inferior parathyroids separate from the thymus

and come to lie below the superior parathyroids.