Muscles of Mastication, Face, Jaw And Eye (Nerves And Actions) Flashcards
Masseter
N: Trigeminal n (C-V) (mandibular division)
A: Elevates the mandible (slight protraction)
Temporalis
N: Trigeminal n (C-V) (mandibular division)
A: Elevates and retractsmandible, assists in ipsilateral deviation
Medial Pterygoid
N: Trigeminal n (C-V) (mandibular division)
A: Elevates and protracts mandible, contralateral deviation
Lateral Pterygoid
N: Trigeminal n (C-V) (mandibular division)
A: Depresses and protracts mandible, contralateral deviation
Frontalis
N: Facial n (C - VII) (temporal branch)
A: Draws scalp anteriorly, raises eyebrows and wrinkles skin of forehead horizontally
Corrugator Supercilii
N: Facial n (C - VII) (temporal branch)
A: Draws eyebrows inferiormedial causing vertical wrinkles in forehead
Occipitalis
N: Facial n (C - VII) (post auricular branch)
A: Draws scalp posteriorly and assists in
wrinkling forehead
Orbicularis Oculi
N: Facial n (C - VII) (temporal & zygomatic branches)
A: Closes eyelids
Auriculares
N: Facial n (C - VII) (post auricular branch)
A: Superior - elevates pinna of ear
Anterior - draws pinna of ear anteriorly
Posterior - draws pinna of ear posteriorly
Procerus
N: Facial n (C - VII) (buccal branch)
A: Draws medial angle of eyebrow inferior and pulls skin of nose superior
Levator Palpebrae Superioris
N: Oculomotor n (C - III)
A: Elevates upper eyelid
Nasalis
N: Facial n (C - VII) (buccal branch)
A: Depresses nasal cartilage and flares nostrils
Levator Labii Superioris
N: Facial n (C - VII) (buccal branch)
A: Elevates upper lip
Levator Labii Superioris Alaeque Nasi
N: Facial n (C - VII) (buccal branch)
A: Elevates upper lip
Zygomaticus Minor
N: Facial n (C - VII) (buccal branch)
A: Elevates upper lip
Zygomaticus Major
N: Facial n (C - VII) (buccal branch)
A: Elevates and pulls angle of mouth laterally
Orbicularis Oris
N: Facial n (C - VII) (buccal & mandibular branches)
A: Closes, compresses, protrudes, and shapes lips
Risorius
N: Facial n (C - VII) (buccal branch)
A: Draws angle of mouth laterally
Buccinator
N: Facial n (C - VII) (buccal branch)
A: Compresses cheek
Depressor Anguli Oris
N: Facial n (C - VII) (mandibular branch)
A: Draws corners of mouth inferiorly
Depressor Labii Inferioris
N: Facial n (C - VII) (mandibular branch)
A: Depresses lower lip
Mentalis
N: Facial n (C - VII) (mandibular branch)
A: Elevates and protrudes lower lip
Platysma
N: Facial n (C - VII) (cervical)
A: Depresses lower jaw and lip, tenses and ridges skin of neck
Superior Rectus
N: Oculomotor nerve (C-III)
A: Raises the cornea superomedial
Inferior Rectus
N: Oculomotor nerve (C-III)
A: Depresses cornea inferomedial
Medial Rectus
N: Oculomotor nerve (C-III)
A: Rotates cornea medially
Lateral Rectus
N: Abducent nerve (C-VI)
A: Rotates cornea laterally
Inferior Oblique
N: Oculomotor nerve (C-III)
A: Rotates cornea superolateral
Superior Oblique
N: Trochlear nerve (C-IV)
A: Rotates cornea inferolateral