Mucles Of Face & Neck Flashcards
Zygomaticus
Raises corners of mouth (as in smiling)
Levator labii superioris
Raises upper lip as in snarling
Buccinator
Compresses cheek as in sucking
Risorius
Pulls corners of mouth back (as in smiling)
Orbicularis oris
Puckers mouth as in kissing
Orbicularis oculi
Closes eyes as in winking
Temporalis
Elevates and retracts mandible (closes jaw)
Epicranius
Frontal action: raises eyebrows
Occipital action: pulls scalp posteriorly
Superior rectus
Adducts and elevates eyeball
Inferior rectus
Adducts and depresses eyeball
Medial rectus
Adducts eyeball
Superior oblique
Depresses and abducts eyeball
Inferior oblique
Abducts and elevates eyeball
Platysma
Depresses mandible as in horror expression
Lateral rectus
Abducts eyeball
Masseter
O: zygomaticus arch
I: angle and ramps of mandible
A: elevates jaw, closes mouth
Thyrohyoid
O: thyroid cartilage
I: hyoid bone
A: depress hyoid, elevate thyroid
Mylohyoid
O: mandible
I: hyoid bone
A: elevates hyoid
Digastric
O: mandible and mastoid process
I: hyoid bone
A: depresses mandible, opens mouth
Digastric and masseter
Antagonist
Sternohyoid
O: manubrium of sternum, clavicle
I: hyoid bone
A: depresses hyoid and larynx
Sternocleidomastoid
O: manubrium of sternum, clavicle
I: mastoid process
A: flexes and rotates head
Sternothyroid
O: manubrium of sternum, clavicle
I: thyroid cartilage
A: depresses hyoid & larynx
Depresses hyoid and larynx
Sternohyoid
Sternothyroid
Elevates hyoid
Mylohyoid
Depresses hyoid
Thyrohyoid
Sternohyoid
Sternothyroid
Elevates thyroid
Thyrohyoid
