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Encyclopedia > Buccinator

Buccinator

The buccinator is a muscle of which the bulk of is located in the cheeks. It arises from the alveolar processes of the maxillary bone and mandible and inserts in the fibres of the orbicularis oris. It is innervated by the seventh cranial nerve, the facial nerve (VII). The buccinator compresses the cheeks against the teeth and is used in acts such as blowing. It is an assistant muscle of mastication (chewing). A top-down view of skeletal muscle Muscle is a contractile form of tissue. ... The maxillae are the largest bones of the face, except for the mandible, and form, by their union, the whole of the upper jaw. ... This article is about the human bone. ... Cranial nerves are nerves which start directly from the brainstem instead of the spinal cord. ... The facial nerve is seventh of twelve paired cranial nerves. ... Mastication is a name for the process of breaking up of food and mixing it with saliva. ...

The buccinator muscle. It is outlined in red for more clarity.
The buccinator muscle. It is outlined in red for more clarity.

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Module11 (596 words)
In the maxilla the buccinator attaches to the alveolar process lateral to the molars.
the roots of the second and third molars are superior to the buccinator thus odontogenic infection can easily spread in the left between masseter and buccinator and from there to the infratemporal fossa and temporal fossa between the fascia and the temporalis muscle.
The canine and premolar roots are anterior to the buccinator and odontogenic infection here tends to spread to the canine fossa and then to the lower eyelid while infections from the apecies of the incisors, which are also anterior to the buccinator, will spread to the upper lip.
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