Second pharyngeal arch
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| Second pharyngeal arch | |
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| Head end of human embryo, about the end of the fourth week. | |
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| Floor of pharynx of embryo. (Second arch visible near center.) | |
| Latin | arcus pharyngeus secundus |
| Gray's | p.66 |
| Code | TE E5.16.4.0.2.0.12 |
The second pharyngeal arch or hyoid arch (or second branchial arch) assists in forming the side and front of the neck.
Derivatives
Skeletal elements
From the cartilage of the second arch arises
- Stylohyoid ligament, and
- Lesser cornu of the hyoid bone.
Muscles
- Occipitofrontalis muscle
- Platysma
- Stylohyoid muscle
- Posterior belly of Digastric
- Stapedius muscle
- Auricular muscles
Nerve supply
Additional images
-
Human embryo from thirty-one to thirty-four days
References
- This article incorporates text from a public domain edition of Gray's Anatomy.
External links
- plastic/216 at eMedicine
- Overview at howard.edu
- Second branchial arch: Mnemonic
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