Muscles of Mastication, Face, Jaw And Eye (O's And I's) Flashcards
Masseter
O: Zygomatic arch
I: Angle and ramus of the mandible
Temporalis
O: Temporal fossa - parietal bone, frontal bone, temporal bone, sphenoid bone, and temporal fascia
I: Coronoid process and anterior ramus of mandible
Medial Pterygoid
O: Medial surface of lateral pterygoid plate of sphenoid bone and maxillary tuberosity
I: Angle and ramus of mandible
Lateral Pterygoid
O: Greater wing and lateral surface of lateral pterygoid plate of sphenoid bone
I: Condylar process of mandible and temporomandibular capsule and disc
Frontalis
O: Skin and fascia above supraorbital margin
I: Galea aponeurotica
Occipitalis
O: Superior nuchal line and mastoid process
I: Galea aponeurotica
Auriculares
O: Superior - galea aponeurotica
Anterior - superficial temporal fascia
Posterior - mastoid process
I: Cartilage of ear
Orbicularis Oculi
O: Orbital - medial wall of orbit and medial palpebral ligament
Palpebral - medial palpebral ligament
I: Orbital - circular path around orbit to medial wall of orbit and medial palpebral ligament
Palpebral - lateral palpebral ligament
Corrugator Supercilii
O: Medial end of superciliary arch of frontal bone
I: Medial skin of eyebrow
Procerus
O: Fascia covering nasal bone, nasal bone, and nasal cartilage
I: Skin between eyebrows
Levator Palpebrae Superioris
O: Inferior surface of the lesser wing of sphenoid bone
I: Skin of upper eyelid
Nasalis
O: Maxilla and cartilage
I: Skin over bridge of nose and alar of nose
Levator Labii Superioris
O: Maxilla superior to infraorbital foramen and zygomatic bone
I: Skin medial to angle of mouth and orbicularis oris
Zygomaticus Minor
O: Zygomatic bone
I: Skin of upper lip
Zygomaticus Major
O: Zygomatic bone
I: Skin at angle of mouth and orbicularis oris
Levator Labii Superioris Alaeque Nasi
O: Frontal process of maxilla
I: Skin medial to angle of mouth and orbicularis oris
Orbicularis Oris
O: Muscle fibers surrounding opening of mouth
I: Skin and mucous membranes around mouth
Superior Rectus
O: Tendinous ring on posterior wall of orbital cavity
I: Superior surface of eyes posterior to corneoscleral junction
Risorius
O: Fascia over masseter
I: Skin at angle of mouth
Buccinator
O: Alveolar processes of maxilla and mandible and pterygomandibular raphe
I: Orbicularis oris
Mentalis
O: Alveolar process of mandible
I: Skin of chin and lower lip
Depressor Anguli Oris
O: Body of mandible
I: Angle of mouth and blends into orbicularis oris
Platysma
O: Deep fascia over anterior deltoid and pec major
I: Body of mandible, muscles, fascia, and skin around mouth
Depressor Labii Inferioris
O: Body of mandible
I: Skin and blends into orbicularis oris
Inferior Rectus
O: Tendinous ring on posterior wall of orbital cavity
I: Inferior surface of eyeball posterior to corneoscleral junction
Medial Rectus
O: Tendinous ring on posterior wall of orbital cavity
I: Medial surface of orbital wall posterior to corneoscleral junction
Lateral Rectus
O: Tendinous ring on posterior wall of orbital cavity
I: Lateral surface of orbital wall posterior to corneoscleral junction
Superior Oblique
O: Posterior wall of orbital cavity
I: Passes through fascial pulley and is attached to superior surface of eyeball beneath superior rectus
Inferior Oblique
O: Floor of orbital cavity
I: Lateral surface of eyeball deep to lateral rectus
