Muscles Flashcards
Occipitofrontalis–frontal belly
–epicranial aponeurosis to skin and subcutaneous tissue of eyebrows and forehead
–elevates eyebrows and wrinkles skin of forehead
–facial nerve
Occipitofrontalis–occipital belly
–superior nuchal line to epicranial aponeurosis
–retracts scalp
–facial nerve
Buccinator
–mandibular and maxillary alveolar processes and pterygomandibular raphe to angle of mouth
–presses cheek against teeth, resists distension of cheek when blowing
–facial nerve
Orbicularis oris
–anterior mandible and maxilla and angle of mouth to mucus membrane of lips
–closes mouth, compresses and protrudes lips, resists distension of lips when blowing
–facial nerve
Orbicularis oculi
–medial orbit margin and medial palpebral ligament to skin around margin of orbit and superior and inferior tarsal plates within eyelids
–closes eyelids
–facial nerve
Masseter
–inferior border of zygomatic bone and zygomatic arch to angle of mandible and lateral surface of ramus of mandible
–elevate and protrude mandible
–anterior division of mandibular nerve
Temporalis
–temporal fossa to coronoid process of mandible
–elevate and retrude mandible
–anterior division of mandibular nerve
Lateral pterygoid
–greater wing of sphenoid and lateral pterygoid plate to condyloid process of mandible and joint capsule and articular disc of TMJ
–Uni: laterally deviates jaw to contralateral side (chewing)
Bi: protrudes and depresses mandible
–Anterior division of mandibular nerve
Medial pterygoid
–lateral pterygoid plate to medial surface of ramus and angle of mandible
–Uni: laterally deviates jaw to contralateral side (chewing)
Bi: protrudes and elevates mandible
–Anterior divison of mandibular nerve
Levator palpebrae superioris
–lesser wing of sphenoid to superior tarsus and skin of superior eyelid
–elevates superior eyelid
–oculomotor nerve
Superior rectus
–common tendinous ring to superior sclera
–elevates, adducts, and medially rotates eye
–oculomotor nerve
Inferior rectus
–common tendinous ring to inferior sclera
–depresses, adducts, and laterallyl rotates eye
–oculomotor nerve
Lateral rectus
–common tendinous ring to lateral sclera
–abducts eye
–abducens nerve
Medial rectus
–common tendinous ring to medial sclera
–adducts eye
–oculomotor nerve
Inferior oblique
–anterior floor of orbit to sclera deep to lateral rectus m.
–abducts, elevates, and laterally rotates eye
–oculomotor nerve
Superior oblique
–body of sphenoid to tendon through trochlea to sclera deep to superior rectus muscle
–abducts, depresses, and medially rotates eye
–trochlear nerve
Rectus capitis lateralis
–occipital bone to transverse process of atlas
–flex and stabilize head
–anterior rami of C1-C2
Rectus capitis anterior
–occipital bone to lateral mass of atlas
–flex and stabilize head
–anterior rami of C1-C2
Longus capitis
–occipital bone to transverse processes of cervical vertebrae
–flex head and neck
–anterior rami of cervical spinal nerves
Longus colli
–anterior tubercle of C1 and bodies of cervical and upper thoracic vertebrae to transverse processes of cervical vertebrae
–flex and rotate neck
–anterior rami of C2-C6
Superior pharyngeal constrictor
–pterygoid hamulus of sphenoid, pterygomandibular raphe, and greater and lesser horns of hyoid to occipital bone and pharyngeal raphe
–constrict walls of pharynx when swallowing
–pharyngeal branch of vagus
Middle pharyngeal constrictor
–greater and lesser horn of hyoid to pharyngeal raphe
–constrict walls of pharynx when swallowing
–pharyngeal branch of vagus
Inferior pharyngeal constrictor
–thyroid and cricoid cartilages to pharyngeal raphe
–constrict walls of pharynx when swallowing
–pharyngeal branch of vagus
Stylopharyngeus
–styloid process to lateral wall of pharynx
–elevates pharynx during swallowing and speaking
–glossopharyngeal nerve
