Cervical sinus

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Cervical sinus

Pattern of the branchial arches. I-IV branchial arches, 1-4 branchial pouches (inside) and/or pharyngeal grooves (outside) a Tuberculum laterale b Tuberculum impar c Foramen cecum d Ductus thyreoglossus e Sinus cervicalis
Latin	sinus cervicalis
Gray's	p.67

During Human embryogenesis the mandibular arch and hyoid arch grow more rapidly than those behind them, with the result that the latter become, to a certain extent, telescoped within the former, and a deep depression, the cervical sinus, is formed on either side of the neck.

This sinus is bounded in front by the hyoid arch, and behind by the thoracic wall; it is ultimately obliterated by the fusion of its walls.

Additional images

The head and neck of a human embryo thirty-two days old, seen from the ventral surface.

External links

hednk-022 — Embryo Images at University of North Carolina

This article incorporates text from a public domain edition of Gray's Anatomy.

Human development of head and neck (GA 1.65, TE E5.3, 5.4)

Face

Oral cavity

Palate	Primary palate Secondary palate

Tongue	Lateral lingual swelling Tuberculum impar Copula linguae Hypopharyngeal eminence Gustatory placode

General branchial apparatus	Pharyngeal groove Cervical sinus Pharyngeal arch 1st 2nd Pharyngeal pouch

M: MOU

anat/devp

noco/cofa (c)/cogi/tumr, sysi

proc (peri), drug (A1)

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