The common development of parathyroid gland and the thymus is from which of the structures?
The parathyroid glands develop from the endoderm of the third and fouh pharyngeal pouches (Brachial Pouch). The thymus is also derived from the third pharyngeal pouch. The inferior parathyroid glands are derived from the dorsal pa of the third pharyngeal pouch, and the thymus arises from the ventral pa of the third pharyngeal pouch. The superior parathyroid glands are derived from the fouh pharyngeal pouch and migrate together with the ultimobranchial bodies.
Brachial cyst
Brachial cleft
Brachial pouch
Brachial arch