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From Wikipedia, the free encyclopedia
In the embryonic development of vertebrates, pharyngeal pouches form on the endodermal side between the pharyngeal arches. The pharyngeal grooves (or clefts) form the lateral ectodermal surface of the neck region to separate the arches.
This article needs additional citations for verification. (April 2009) |
Pharyngeal pouch | |
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![]() Pattern of the branchial arches. I-IV branchial arches, 1–4 pharyngeal pouches (inside) and/or pharyngeal grooves (outside) a Tuberculum laterale b Tuberculum impar c Foramen cecum d Ductus thyreoglossus e Sinus cervicalis | |
![]() Floor of pharynx of human embryo about twenty-six days old. | |
Details | |
Carnegie stage | 10 |
Identifiers | |
Latin | sacci pharyngei |
TE | pouch (embryology)_by_E5.4.2.0.0.1.1 E5.4.2.0.0.1.1 |
FMA | 293063 |
Anatomical terminology |
The endoderm lines the future auditory tube (pharyngotympanic Eustachian tube), middle ear, mastoid antrum, and inner layer of the tympanic membrane. Derivatives of this pouch are supplied by Mandibular nerve.
Derivatives include:
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