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	subject #13 67

The mandibular and hyoid arches 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.

[edit] Additional images

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

[edit] External links

• hednk-022 — Embryology at UNC

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

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v • d • e Human development of head and neck / branchial apparatus (GA 1.65) Nose Nasal placode · Olfactory pit · nasal prominences (Lateral, Medial) · Intermaxillary segment Mouth/neck Palate Primitive palate · Secondary palate 1st arch Frontonasal prominence · Maxillary prominence · Mandibular prominence (Meckel's cartilage) Anterior tongue: Lateral lingual swelling · Tuberculum impar Thyroid (pouches 3-5) Thyroid diverticulum · Thyroglossal duct · Ultimobranchial body General Pharyngeal groove (Cervical sinus) · Pharyngeal arch (1st, 2nd) · Pharyngeal pouch (Ultimobranchial body) respiratory system navs: anat nose,larynx/lower+thoracic cavity/physio/dev, noncongen/congen/tumors, symptoms+signs/eponymous, proc mouth navs: anat/dev, noncongen/congen face/congen GI/neoplasia, symptoms, proc endocrine navs: anat/physio/dev/hormones, noncongen/congen/neoplasia, symptoms+signs/eponymous, proc