Muscles: head neck trunk part 1

Card Set Information

Author:
edeleon
ID:
287155
Filename:
Muscles: head neck trunk part 1
Updated:
2014-11-12 01:16:49
Tags:
muscles head neck trunk
Folders:
Lab practical 3
Description:
Origin, insertion and action, some pictures
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  1. Rectus Abdominis: action?
    • Action: flexion of spine, compression of abdominal cavity
  2. External abdominal oblique: actions?
    • Action: flexion of spine
    • Compression of abdominal cavity
    • Trunk Rotation
    • Lateral flexion
  3. Internal ABdominal oblique: actions?
    • Actions: Flexion of spine
    • Compression of abdominal cavity
    • Trunk rotation
    • Lateral flexion
  4. Transversus abdominis: actions?
    • Action: compress abdominal contents
  5. Diaphragm: action?
    action: inspiration
  6. sternocleidomastoid: action?
    action: active inspiration
  7. Abdominal muscles: action?
    action: active expiration
  8. Frontalis: origin, insertion, action?
    • Origin: epicranial aponeurosis (scalp)
    • insertion: skin of forehead
    • action: lifts eyebrows and skin of forehead
  9. Occipitalis: origin, insertion, action?
    • Origin: epicranial aponeurosis (scalp)
    • insertion: nuchal lines
    • action: lifts eyebrows and skin of forehead
  10. Orbicularis Oculi: origin, insertion, action?
    • Origin & Insertion: sphincter muscle around eyes
    • action: open and closes eyes
  11. Orbicularis Oris: origin, insertion, action?
    • Origin & insertion: sphincter muscles around mouth
    • action: open and closes mouth
  12. Mentalis: action?
    • Action: Protudes lower lip (ie pouty face)
  13. Temporalis: origin, insertion, action
    • origin: Temporal Fossa
    • insertion: coronoid process of mandible
    • Action: elevates mandible = closes the mouth
  14. Masseter: origin, insertion, action?
    • Origin: Zygomatic arch
    • insertion: angle and ramus of mandible
    • action: elevates mandible = occludes ("clenches") teeth
  15. Lateral pterygoid: action?
    • Action: lateral displacement of mandible
  16. Medial pterygoid: action?
    • action: lateral displacement of mandible
  17. Buccinator: action?
    • action: compresses cheeks against teeth

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