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17 Cards in this Set
- Front
- Back
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Epicranius
Frontalis |
A-draws back the scalp to raise the eyebrows and wrinkle the brow
I-skin above the nose and eyes O-galea aponeurosis, anterior to the vertex |
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Epicranius
Occipitalis |
A-draws back the scalp to raise the eyebrows and wrinkle the brow
I-galea aponeurosis, over the occipital bone O-lateral 2/3 of superior nuchal line and external occipital protuberance |
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Orbicularis oculi
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A-powerfully closes the eye
I- circumferentially around orbit meeting in palpebral raphe O-orbital portion: nasal process of frontal bone |
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Orbicularis oris
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A-closes the lips & protrudes the lips
I-circumferentially around mouth O-alveolar border of maxilla lateral to midline of mandible |
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Zygomaticus minor
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Origin: zygomatic bone, posterior to maxillary-zygomatic suture
Insertion: skin of the upper lip Action: elevates the upper lip |
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Zygomaticus major
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Origin: anterior to zygomatic-temporal suture
Insertion: modiolus (angle of the mouth) Action: lifts and draws back the angle(s) of the mouth (as in smiling) |
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Levator labii superioris
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Origin: medial 1/2 of infraorbital margin
Insertion: upper lip muscles Action: elevates the upper lip |
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Orbicularis oculi
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A-powerfully closes the eye
I- circumferentially around orbit meeting in palpebral raphe O-orbital portion: nasal process of frontal bone |
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Orbicularis oris
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A-closes the lips & protrudes the lips
I-circumferentially around mouth O-alveolar border of maxilla lateral to midline of mandible |
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Zygomaticus minor
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Origin: zygomatic bone, posterior to maxillary-zygomatic suture
Insertion: skin of the upper lip Action: elevates the upper lip |
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Zygomaticus major
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Origin: anterior to zygomatic-temporal suture
Insertion: modiolus (angle of the mouth) Action: lifts and draws back the angle(s) of the mouth (as in smiling) |
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Levator labii superioris
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Origin: medial 1/2 of infraorbital margin
Insertion: upper lip muscles Action: elevates the upper lip |
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Depressor labii inferioris
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Origin:
mandible, between symphysis and mental foramen along oblique line of the mandible Insertion: skin of the lower lip Action: draws the lower lip downward and laterally |
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Depressor anguli oris
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Origin:
along the oblique line of mandible & lateral aspect of mental tubercle of the mandible Insertion: modiolus Action: lowers the angle(s) of the mouth (as in frowning) |
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Masseter
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Origin: Superficial:zygomatic process of the maxilla & inferior border of zygomatic arch. Intermediate: inner surface of zygomatic arch .Deep: posterior aspect of inferior border of zygomatic arch
Superficial: angle of mandible lateral surface of mandibular ramus Intermediate: ramus of mandible Deep: superior ramus of mandible coronoid process of mandible Action: closes the lower jaw (clenches the teeth) may deviate mandible to opposite side of contraction |
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Sternocleidomastoid
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Origin: (two heads)
manubrium of sternum medial portion of clavicle Insertion: mastoid process of temporal bone Action: rotates to side opposite of contraction laterally flexes to the contracted side bilaterally flexes the neck |
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Spinalis capitis
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Origin: spinous processes of lower cervical & upper thoracic vertebrae
Insertion: between superior & inferior nuchal lines of occipital bone Action: (same for all erector spinae) bilateral: extension of vertebral column maintenance of erect posture (pneumonic = I Like Standing) stabilization of vertebral column during flexion, acting in contrast to abdominal muscles and the action of gravity unilateral: lateral bend to same side rotation to same side opposite muscles contract eccentrically for stabilization |
