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Spinal practicle 2.1

Actions

QuestionAnswer
Frontalis belly, epicranius Pulls scapl foward, wrinkles forehead and raises eyebrows
Occipitalis belly, epicranius Pulls scalp backwards
Procerus Depresses eyebrows medially
Compressor naris Compresses cartilage at the bridge of the nose
Dilatator naris Widens, dilates nostril and anterior nasal aperture
Depressor septi Widens nostril
Corrugator supercilii Draws eyebrow medially and down
Levator Labii Superioris Raises and everts upper lip
Levator Labii Superioris Alequae Nasi Raises and everts upper lip; dilates notrils
Zygomaticus minor Raises upper lip, produces nasolabial groove
Zygomaticus major Draws angle of mouth up and out
Levator anguli oris Raises angle of mouth, produces nasolabial groove
Orbicularis oris Close mouth, purse and protrude lips
Buccinator Compresses cheeks against teeth
Mentalis Raises and protrudes lower lip
Depressor labii inferioris Draws lower lip down
Depressor anguli oris Draws corner of mouth down and out
Levator palpebra superioris Elevates upper eyelid
Superior rectus Elevates and adducts the cornea, intorsion
Inferior rectus Depresses and adducts the cornia, extorsion
Medial rectus Adducts cornea
Lateral rectus Abducts cornea
Superior oblique Depresses and abducts cornea, intorsion
Inferior Oblique Elevates and abducts cornea, extorsion
Temporalis Elevates and retracts mandible
Masseter Elevates and protracts mandible
Medial pterygoid Elevate and protract mandible, assits in gliding or rotatory movement
Lateral Pterygoid Protracts mandible, pulls disc forward, depress chin and assist in gliding rotatory movement
Created by: LrB
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