Maxillary Artery
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Maxillary Artery

The maxillary artery supplies deep structures of the face. It branches from the external carotid artery just deep to the neck of the mandible.

Structure

The maxillary artery, the larger of the two terminal branches of the external carotid artery, arises behind the neck of the mandible, and is at first imbedded in the substance of the parotid gland; it passes forward between the ramus of the mandible and the sphenomandibular ligament, and then runs, either superficial or deep to the lateral pterygoid muscle, to the pterygopalatine fossa.

It supplies the deep structures of the face, and may be divided into mandibular, pterygoid, and pterygopalatine portions.

First portion

The first or mandibular portion (or bony portion) passes horizontally forward, between the neck of the mandible and the sphenomandibular ligament, where it lies parallel to and a little below the auriculotemporal nerve; it crosses the inferior alveolar nerve, and runs along the lower border of the lateral pterygoid muscle.

Branches include:

Second portion

The second or pterygoid portion (or muscular portion) runs obliquely forward and upward under cover of the ramus of the mandible and insertion of the temporalis, on the superficial (very frequently on the deep) surface of the lateral pterygoid muscle; it then passes between the two heads of origin of this muscle and enters the fossa.

Branches include:

Third portion

The third or pterygomaxillary portion lies in the pterygopalatine fossa in relation with the pterygopalatine ganglion. This is considered the terminal branch of the maxillary artery.

Branches include:

Nomenclature

  • Formerly, the term "external maxillary artery" was used to describe what is now known as the facial artery (per Terminologia anatomica.) Currently, the term "external maxillary artery" is less commonly used, and the terms "internal maxillary artery" and "maxillary artery" are equivalent.

Additional images

References

This article incorporates text in the public domain from page 559 of the 20th edition of Gray's Anatomy (1918)

External links


  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

Maxillary_artery
 



 



 
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