Anatomy of the Face - Flipbook - Page 19
Buccinator (Musculus buccinator)
ORIGIN
ACTION
SUPERIOR PART: ALVEOLAR PROCESS OF MAXILLA
INFERIOR PART: ALVEOLAR PART OF MANDIBLE
POSTERIOR PART: PTERYGOMANDIBULAR RAPHE, BUCCINATOR
CREST OF MANDIBLE
COMPRESSES CHEEK AGAINST MOLAR TEETH
INSERTION
MODIOLUS, BLENDS WITH MUSCLES OF UPPER LIP
BLOOD SUPPLY
BUCCAL ARTERY (MAXILLARY ARTERY), FACIAL ARTERY
INNERVATION
BUCCAL BRANCH OF FACIAL NERVE (CN VII)
LYMPHATIC DRAINAGE
DRAINS
NODES
INTO
BUCCINATOR
AND
SUPRAMANDIBULAR
LYMPH
CLINICAL SIGNIFICANCE:
THE BUCCINATOR MUSCLE IS A THIN QUADRILATERAL FACIAL
MUSCLE THAT IS THE MAIN COMPONENT OF THE CHEEK. THE
BUCCINATOR MUSCLE PLAYS AN ACTIVE ROLE ALONG WITH
ORBICULARIS ORIS AND SUPERIOR CONSTRICTOR MUSCLE
DURING SWALLOWING, MASTICATION, BLOWING, AND
SUCKING. IT BELONGS TO THE BUCCOLABIAL GROUP OF
FACIAL MUSCLES. THIS MUSCLE IS THE MAIN MUSCLE OF THE
CHEEK, THAT PROVIDES IT WITH STRUCTURE AND TIGHTNESS. IT
COMPRESSES THE CHEEK AGAINST THE MOLARS, WHICH IS
IMPORTANT TO KEEP THE FOOD BOLUS CENTRAL IN THE ORAL
CAVITY, AND TO PREVENT THE CHEEKS FROM BEING BITTEN
DURING MASTICATION. OFTEN REFERRED TO AS “THE
TRUMPETER MUSCLE”, THE BUCCINATOR IS THE MAIN MUSCLE
INVOLVED IN PLAYING WIND INSTRUMENTS, AS IT EXPELS AIR
FROM THE DISTENDED CHEEKS. IT IS ONE OF THE FIRST MUSCLES
IN AN INFANT TO GET ACTIVATED DURING SUCKING.
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