Human Anatomy Part 1 - K. A. Dyubenko, A. K. Kolomiyytsev, Y. B. Chaykovsky 2002

Special Part
Splanchnology, splanchnologia [the study of viscera] - Development of the digestive and respiratory systems
Development of the pharynx

The Pharynx develops from the pharyngeal region of the foregut following the Separation of various outpocketings from it. The first pair of pharyngeal (branchial) pouches gives rise to the tympanic cavity of the Middle ear and the auditory (Eustachian) tube.

The second pair of pharyngeal pouches forms the epithelium of the palatine Tonsils, which develops invaginations (crypts). Along the sides of the crypts, reticular Connective Tissue differentiates from mesenchyme, which becomes colonized by lymphocytes by the third month of Embryogenesis.

The third and fourth pairs of pharyngeal pouches form the epithelial component of the Thymus, Parathyroid glands, and ultimobranchial bodies.

The rudimentary fifth pair of branchial pouches gives rise to the so-called ultimobranchial bodies.



Last update: 08/08/2026

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