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Spinal practicle 2.1
Actions
Question | Answer |
---|---|
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 |