head & neck region

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head & neck region
2011-03-22 01:47:57
muscle movement joints head neck

muscle movement for head and neck region
Show Answers:

  1. What is fascia?
    a wrap to hold things together
  2. What is a fascicle?
    a bundle of long tubes where a muscle is first subdivided into
  3. Buccinator
    draws corner of mouth laterally; compresses cheek inward (as in wristling); holds food between teeth during chewing
  4. Corugator Supercilii
    raws eyebrows medially and inferiorly; wrinkles skin of forehead vertically; pulls skin inferiorly and anteriorly; wrinkles brow
  5. Depressor Labii Inferioris
    Function: draws lower lip inferiorly (depresses lower lip)
  6. Frontalis with Occipitalis (occipital-frontalis)
    frontal belly raises eyebrows

    occipital belly fixes aponeurosis & pulls scalp posteriorly
  7. Levator labii superioris
    raises & furrows upper lips, opens lips
  8. Masseter
    prime mover of jaw closure: elevates mandible
  9. Mentalis
    protrudes lower lip; wrinkles chin; eleavates and protrudes lower lip
  10. Orbicularis Oculi
    Function: closes eyes, produces blinking, squinting, and draws eyebrows inferiorly
  11. Orbicularis Oris
    closes lips; purses and protudes lips (kissing & wristling muscle)
  12. Risorius
    draws corner of lip laterally (to the side); tenses lip; zygomaticus synergist
  13. Sternocleidomastoid
    Function: flexion of neck foward and rotate head toward shoulder on opposite side
  14. Temporalis
    Function: closes jaw; elevates & retracts mandible
  15. zygomaticus Major & Minor
    Function: raises lateral corners of mouth upward (smiling muscles)

    • major retracts & elevates corner of mouth
    • minor retracts & elevates upper lip
  16. Pterygoids Medial & Lateral
    • Medial - elevates mandible (synergist of temporalis & masseter) and aids in grinding movements
    • Lateral - protracts jaw (moves it anteriorly), aids in grinding movements of teeth
  17. Lateral Rectus
    moves eye laterally
  18. Inferior Oblique
    elevates eye & turns it laterally
  19. Inferior Rectus
    depresses eye and turns it medially
  20. Medial Rectus
    moves eye medially
  21. Superior Oblique
    depresses eye & turns it laterally
  22. Superior Rectus
    elevates eye and turns it medially
  23. Digastric Anterior & Posterior
    elevate hyoid bone, open mouth & depress mandible
  24. Mylohyoid
    elevates hyoid bone & base of tongue during swallowing
  25. Omohyoid Superior & Inferior
    acting with sternothyroid & sternohyoid depresses larynx & hyoid bone if mandible is fixed, may also fled skull
  26. Platysma
    tenses skin of neck, depresses mandible, pulls lower lip back & down
  27. Scalenes Anterior, Medius, Posterior
    flex and slightly rotate neck, elevate ribs 1-2 (aid in inspiration)
  28. Splenius (note: splenius capitis)
    as a group, extend or hyperextend head; when only 1 side is active, head is rotated & bent toward same side
  29. Sternohyoid
    acting with sternothyroid & omohyoid depresses larynx & hyoid bone if mandible is fixed, may also fled skull
  30. Sternothyroid
    acting with sternohyoid & omohyoid depresses larynx & hyoid bone if mandible is fixed, may also fled skull
  31. Thyrohyoid
    depresses hyoid bonel elevates larynx if hyoid is fixed
  32. Longissimus Capitis
    extends head
  33. Semispinalis Capitis
    acting together, extend head & vertebral column; acting independently right or left causes rotation toward opposite side
  34. Tensor Tympani
    • EAR MUSCLE...
    • Function: dampen sounds such as those produced from chewing
  35. tongue
    Function: taste, cleaning teeth
  36. Hypoglossus, Styloglossus
    Function: extrinsic muscles that act to change the position the tongue (depresses and retracts tongue)
  37. Geniohyoid
    Function: raise the hyoid bone and draw it forward and to retract and depress the mandible
  38. Styloyhoid
    Function: assist in the actions of chewing and swallowing.
  39. Stylopharyngeus
    Function: elevates the larynx and pharynx
  40. Thyrohyoid
    Function: depress hyoid bone & larynx during swallowing and speaking