Hyoid arch
Head end of human embryo, about the end of the fourth week.
Floor of pharynx of embryo. (Second arch visible near center.)
Gray's	subject #13 66

The hyoid arch (or second branchial arch) assists in forming the side and front of the neck.

Contents 1 Derivatives 1.1 Skeletal elements 1.2 Muscles 2 Nerve supply 3 Additional images 4 References 5 External links

[edit] Derivatives

[edit] Skeletal elements

From the cartilage of the second arch arises

• Stapes,

• Styloid process,

• Stylohyoid ligament, and

• Lesser cornu of the hyoid bone.

[edit] Muscles

• Muscles of face

• Occipitofrontalis muscle

• Platysma

• Stylohyoid muscle

• Posterior belly of Digastric

• Stapedius muscle

• Auricular muscles

[edit] Nerve supply

Facial nerve

[edit] Additional images

Human embryo from thirty-one to thirty-four days

[edit] References

• 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 As such, some of the information contained within it may be outdated.

[edit] External links

• plastic/216 at eMedicine
• Overview at howard.edu
• Second branchial arch: Mnemonic

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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