Buccinator muscle Buccinator muscle The buccinator ( ) is a thin quadrilateral muscle occupying the interval between the maxilla and the mandible at the side of the face. It forms the anterior part of the cheek or the lateral wall of the oral cavity. It arises from the outer surfaces of the alveolar processes of the maxilla and mandible, corresponding to the three pairs of molar teeth; and behind, from the anterior border of the pterygomandibular raphé which separates it from the constrictor pharyngis superior. It is attached upon the buccinator crest as far forward as the first molar tooth. The fibers
Pectineus muscle always present and provides the sole innervation for the pectineus muscle in over 90% of cases. The muscle is also innervated by the accessory obturator nerve in the 8.7% of cases in which the nerve occurs. It is one of the muscles primarily responsible for hip flexion. It also adducts the thigh. http://deepblue.lib.umich.edu/bitstream/handle/2027.42/49789/1091360303_ftp.pdf?sequence=1 Saladin, Kenneth S. Anatomy & Physiology: The Unity of Form and Function. New York, NY: McGraw-Hill, 2007. pg.493. Print. Pectineus muscle The pectineus muscle (, from the Latin word "pecten", meaning comb) is a flat, quadrangular muscle, situated at the anterior (front) part of the upper and