"origin: outer surface of alveolar processes of both maxilla and mandible, and anterior margin of the pterygomandibular raphe 1"
"insertion: converges on the modiolus of the mouth, where some fibres decussate to interdigitate with the contralateral muscle"
"arterial supply: branches from the facial artery, buccal branch from the maxillary artery 1"
"innervation: buccal branch of the facial nerve"
"action: directs a food bolus onto the teeth, tenses the cheek and helps to close the mouth"