MUSCLES HEAD AND NECK

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Author:
Anonymous
ID:
114897
Filename:
MUSCLES HEAD AND NECK
Updated:
2011-11-06 15:33:28
Tags:
muscles skeletal
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Description:
Muscles (Head and Neck)
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  1. TEMPORALIS
    • O: temporal fossa
    • I: coranoid process of mandible
    • A: closes jaw
  2. DIGASTRIC
    • O: mandible and mastoid process of temporal bone
    • I: hyoid
    • A: open mouth, depress mandible
  3. MYLOHYOID
    • O: mandible
    • I: hyoid
    • A: elevates hyoid bone
  4. STERNOHYOID
    • O: manubrium of sternum and clavicle
    • I: hyoid bone
    • A: depress larynx and hyoid
  5. STERNOCLEIDOMASTOID
    • O: manubrium of sternum and clavicle
    • I: mastoid process of temporal bone and occipital bone
    • A: flexes and laterally rotates head
  6. SPLENIUS
    • O: spinous process of vertebrae
    • I: mastoid process of temporal bone and occipital bone
    • A: extend/hyperextend head
  7. SCALENES
    • O: transverse process of cervical vertebrae
    • I: ribs
    • A: elevate first two ribs
  8. EPICRANIUS
    • FRONTAL BELLY O: galea aponeurotica
    • I: eyebrows and root of nose
    • A: lift eyebrows
    • OCCIPITAL BELLY
    • O: occipital and temporal bones
    • I: galea aponeurotica
    • A: pulls scalp posteriorly

  9. ORBICULARIS OCCULI
    • O: frontal and maxilla
    • I: tissue of eyelids
    • A: closes eye
  10. ZYGOMATICUS
    • O: zygomatic bone
    • I: skin and muscle at corners of mouth
    • A: riases lateral corners of mouth upward (smiling)
  11. DEPRESSOR LABII INFERIORIS
    • O: mandible
    • I: skin and muscle of lower lip
    • A: draws lower lip inferiorly
  12. RISORIUS
    • O: fascia of masseter
    • I: skin at angles of the mouth
    • A: pulls corner of lips laterally
  13. LEVATOR LABII SUPERIORIS
    • O: zygomatic bone and maxialla
    • I: skin and muscle of upper lip
    • A: opens lips
  14. ORBICULARIS ORIS
    • O: maxilla and mandible
    • I: encirlces mouth
    • A: closes lips
  15. MENTALIS
    • O: mandible
    • I: skin at chin
    • A: wrinkles chin
  16. BUCCINATOR
    • O: maxilla and mandible
    • I: orbicularis oris
    • A: compresses cheek
  17. PLATYSMA
    • O: fascia of chest
    • I: mandible
    • A: tense skin of neck
  18. MASSETER
    • O: zygomatic arch and zygomatic bone
    • I: ramus of mandible
    • A: closes jaw (PRIME MOVER)

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