Lesson 3 Anatomy

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brianklein
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283182
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Lesson 3 Anatomy
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2014-09-16 00:20:56
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part 4
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  1. responsible for major adjustment of the larynx
    -one attachment on a laryngeal cartilage and the other attachment on a non-laryngeal structure
    Extrinsic Laryngeal Musculature
  2. Hyoid and Laryngeal Elevators:

    -composed of two bellies (anterior and posterior)
    Diagstricus
  3. Hyoid and Laryngeal Elevators: Digastricus

    -origin: inner surface of mandible
    Digastricus Anterior
  4. Hyoid and Laryngeal Elevators: Digastricus

    Insertion : joins posterior digastricus by means of intermediate tendon
    digastricus anterior
  5. Hyoid and Laryngeal Elevators: Digastricus

    action: draws hyoid up and forward
    digastricus anterior
  6. Hyoid and Laryngeal Elevators: Digastricus

    origin: mastoid process of the temporal bone
    digastricus posterior
  7. Hyoid and Laryngeal Elevators: Digastricus

    insertion: hyoid bone
    digastricus posterior
  8. Hyoid and Laryngeal Elevators: Digastricus

    action: draws hyoid up and back
    digastricus posterior
  9. Hyoid and Laryngeal Elevators:

    -Styloid process of the temporal bone
    stylohyoid
  10. Hyoid and Laryngeal Elevators:

    insertion: corpus of hyoid bone
    stylohyoid
  11. Hyoid and Laryngeal Elevators:

    action: elevates and retracts the hyoid bone
    stylohyoid
  12. Hyoid and Laryngeal Elevators:

    makes up the floor of the oral cavity
    mylohyoid
  13. Hyoid and Laryngeal Elevators:

    origin: underside of the mandible
    mylohyoid
  14. Hyoid and Laryngeal Elevators:

    Insertion: corpus of hyoid bone
    mylohyoid
  15. Hyoid and Laryngeal Elevators:

    action: elevates hyoid and projects it forward or depresses the mandible
    mylohyoid
  16. Hyoid and Laryngeal Elevators:


    origin: mental spines of the mandible
    geniohyoid
  17. Hyoid and Laryngeal Elevators:

    insertion: hyoid bone at the corpus
    geniohyoid
  18. Hyoid and Laryngeal Elevators:

    action: elevates hyoid and draws it forward
    geniohyoid
  19. Hyoid and Laryngeal Elevators:

    origin: entire surface of the greater cornu of hyoid bone
    hyoglossus
  20. Hyoid and Laryngeal Elevators:

    insertion: sides of the tongue
    hyoglossus
  21. Hyoid and Laryngeal Elevators:

    Action: hyoid elevator or lingual depressor
    hyoglossus
  22. Hyoid and Laryngeal Elevators:

    origin: inner surface of the mandible
    genioglossus
  23. Hyoid and Laryngeal Elevators:

    Insertion: anterior surface of the hyoid corpus
    genioglossus
  24. Hyoid and Laryngeal Elevators:

    action: hyoid elevator
    genioglossus
  25. Hyoid and Laryngeal Elevators:

    The inferior pharyngeal constrictor is comprised of
    thyropharyngeus, cricopharyngeus
  26. Hyoid and Laryngeal Elevators: Inferior Pharyngeal Constrictor

    involved in propelling food through the pharynx

    Action: contraction of muscle promotes elevation of the larynx while constricting the pharynx
    Thyropharyngeus
  27. Hyoid and Laryngeal Elevators: Inferior Pharyngeal Constrictor

    sphincter muscle at the orifice of the esophagus 

    Action: contraction of muscle promotes elevation of the larynx while constricting pharynx
    cricopharyngeus
  28. Hyoid and Laryngeal Depressors:

    origin: posterior superior region of manubrium and medial end of the clavicle
    sternohyoid
  29. Hyoid and Laryngeal Depressors:

    insertion: inferior margin of the hyoid corpus
    sternohyoid
  30. Hyoid and Laryngeal Depressors:

    action: depresses the hyoid
    sternohyoid
  31. Hyoid and Laryngeal Depressors:

    comprised of two bellies- superior and inferior
    omohyoid
  32. Hyoid and Laryngeal Depressors: Omohyoid

    -terminates on the side of the hyoid corpus
    -joins at intermediate tendon with the inferior belly
    -Action: depresses hyoid and larynx
    Superior belly
  33. Hyoid and Laryngeal Depressors: Omohyoid

    -Originates on the upper border of the scapula
    -joins at intermediate tendon with the superior belly
    -Action: Depresses hyoid and larynx
    Inferior belly
  34. Hyoid and Laryngeal Depressors:

    origin: manubrium sterni and first costal cartilage
    sternothyroid
  35. Hyoid and Laryngeal Depressors:

    insertion: oblique line of the thyroid cartilage
    sternothyroid
  36. Hyoid and Laryngeal Depressors:

    action: depresses the thyroid cartilage
    sternothyroid
  37. Hyoid and Laryngeal Depressors:

    Origin: Oblique line of thyroid cartilage
    thyrohyoid
  38. Hyoid and Laryngeal Depressors:

    Insertion: greater cornu of hyoid bone
    thyrohyoid
  39. Hyoid and Laryngeal Depressors:

    action: depresses hyoid or raises the larynx
    thyrohyoid

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