Pharyngeal groove

Pharyngeal groove

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
Details
Identifiers
Latin sulcus pharyngei
Code TE E5.4.2.0.0.0.3

Anatomical terminology

A pharyngeal groove (or branchial groove, or pharyngeal cleft[1]) is made up of ectoderm unlike its counterpart the pharyngeal pouch on the endodermal side.

The first pharyngeal groove produces the external auditory meatus (ear canal).[2] The rest (2, 3, and 4) are overlapped by the growing 2nd pharyngeal arch, and form the floor of the depression termed the cervical sinus, which opens ventrally, and is finally obliterated.

See also

References

External links


This article is issued from Wikipedia - version of the Tuesday, June 02, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.