3.1

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efrain12
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245076
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3.1
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2013-11-04 23:19:54
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Deep muscles of the back
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  1. What are the 3 muscle groups of the back?`
    -deep

    -intermediate

    -superficial
  2. Broad description of action for superficial muscles?
    produce and control limb movements
  3. are the superficial muscles extrinsic or intrinsic?
    extrinsic
  4. Are the intermediate muscles extrinsic or intrinsic?
    extrinsic
  5. broad description of action for intermediate muscles?
    may produce respiratory movement
  6. Are deep muscles extrinsic or intrinsic muscles of the back?
    intrinsic muscles
  7. what structure do deep muscles act upon?
    vertebral column
  8. what 2 actions do the superficial back muscles do?
    -connect upper limb to trunk

    -control limb movement
  9. What are the superficial muscles innervated by?
    ventral rami
  10. what are the 4 muscles that make up the superficial back musckes?
    -trapezius

    -lats

    -levator scapulae

    -rhomboids
  11. intermediate back muscles- what muscle does the serratus posterior superior lie deep to?
    rhomboids
  12. intermediate back muscles- from where does the serratus posterior superior extend from?
    spines of the vertebral column down to ribs 2-5
  13. intermediate back muscles-where does serratus posterior inferior extend from?
    from lower thoracic and upper lumbar spines to the lower 4 ribs (9-12)
  14. what muscle does the serratus posterior inferior lie deep to?
    lats
  15. intermediate back muscles- in what action might the serratus posterior superior and serratus posterior inferior be involved in?
    respiration
  16. intermediate back muscles- what are these two muscles innervated by?
    ventral rami
  17. what 2 actions do the deep muscles of the back do?
    -maintain posture

    -control movements of the vertebral column
  18. where do the deep muscles of the back extend from?
    skull to the pelvis
  19. what are the deep muscles of the back innervated by?
    dorsal rami
  20. what are the 3 groups that divide the deep muscles?
    -superficial intrinsic layer

    -intermediate intrinsic layer

    -deep intrinsic layer
  21. Deep muscles) Superficial Intrinsic layer) Splenius Capitis and Cervicis- actions? (2)
    -if both act, then they extend the head and neck

    -if only one, then they pull the neck and head to the same side
  22. Deep muscles) Superficial Intrinsic layer) Splenius capitis and cervicis- what are these two deep to? (2)
    trapezius and serratus posterior superior
  23. Deep muscles) Superficial Intrinsic layer) Splenius Capitis and Cervicis- origin (2)
    -ligamentum nuchae

    -spinous process of C7 thru T6
  24. Deep muscles) Superficial Intrinsic layer) Splenius capitis and cervicis- insertion of the upper part ? (2)
    -mastoid process

    -partially on occipital bone

    *this is the capitis portion
  25. Deep muscles) Superficial Intrinsic layer) Splenius capitis and cervicis- insertion of the muscle part that originates from spinous process?
    transverse process of C1 thru C4

    ***this is the cervicis portion
  26. Deep muscles) intermediate Intrinsic layer) Erector spinae- from where does it extend from?
    sacrum and illiac crest to the back of the head
  27. Deep muscles) intermediate Intrinsic layer) Erector spinae- what are te 3 divisions called?
    -iliocostalis

    -longissimus

    -spinalis
  28. Deep muscles) intermediate Intrinsic layer) Erector spinae- main action
    maintains erect posture
  29. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis- how many portions does it have? and which are they?
    3, lumborum, thorcis and cervicis portion
  30. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis -where is the origin of the lumborrum?
    illiac crest
  31. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis - where is the origin of the thoracis?
    inferior 6 ribs
  32. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis - where is the origin of the cervicis portion?
    ribs 3-6
  33. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis - where is the insertion for the lumborum and thoracis portions?
    angle of the ribs
  34. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis - where is teh insertion for the cervicis portion?
    transverse process of C6 thru C4
  35. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis - what are these muscles innervated by?
    dorsal rami
  36. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis - when actin together, what is their action?
    extends vertebral column
  37. Deep muscles) intermediate Intrinsic layer) Erector spinae- Iliocostalis - when one side contracts, what is its action?
    • lateral flexion
    • *bends the vertebral column to the same side it is contracting
  38. Deep muscles) intermediate Intrinsic layer) Erector spinae- Longissimus- how many portions does it have? and what are thye?
    3,

    • -capitis
    • - thoracis
    • -cervicis
  39. Deep muscles) intermediate Intrinsic layer) Erector spinae- Longissimus- origin
    -transverse processes of lumbar and cervical vertebrae
  40. Deep muscles) intermediate Intrinsic layer) Erector spinae- Longissimus- inserts? (2)1
    -transverse process of thoracic and cervical vertebrea

    • -mastoid process of temporal bone
    • *capitis portion
  41. Deep muscles) intermediate Intrinsic layer) Erector spinae- Longissimus- innervated?
    dorsal rami
  42. Deep muscles) intermediate Intrinsic layer) Erector spinae- Longissimus- what 2 actions do thoracis and cervicis do?
    -when acting together, extend vertebral column

    -when independent contraction, lateral flexion to the side that flexed
  43. Deep muscles) intermediate Intrinsic layer) Erector spinae- Longissimus- what action does the capitis portion do? (2)
    • -extends the head
    •           or
    • -turns the face towards same side
  44. Deep muscles) intermediate Intrinsic layer) Erector spinae- spinalis- origin
    -spinous process of lumbar and lower thoracic vertebrae
  45. Deep muscles) intermediate Intrinsic layer) Erector spinae- spinalis- insert
    spinous process of upper thoracic and cervical vertebrae
  46. Deep muscles) intermediate Intrinsic layer) Erector spinae- spinalis- innerveated?
    dorsal rami
  47. Deep muscles) intermediate Intrinsic layer) Erector spinae- spinalis- action?
    extends the vertebral column
  48. Deep muscles) intermediate Intrinsic layer) Erector spinae- spinalis- how maby portions make this?
    3,

    • -thoracis
    • -cervicis
    • -*capitis
    • **very small cannot really be seen
  49. are the lateral iliocostals, intermediate longissimus and medial spinalis located on one side of the vertebral or both?
    both
  50. Deep muscles) deep Intrinsic layer) Transversospinal group- what are the 3 different muscle groups?
    -semispinalis

    -multifidus

    -rotatores
  51. Deep muscles) deep Intrinsic layer) Transversospinal group- how many vertebrae does semispinalis cross?
    6
  52. Deep muscles) deep Intrinsic layer) Transversospinal group- how many vertebrae does multifidus cross?
    4
  53. Deep muscles) deep Intrinsic layer) Transversospinal group- how many vertebrae does rotatores cross?
    1-2
  54. Deep muscles) deep Intrinsic layer) Transversospinal group- what muscle are they deep to?
    spinalis
  55. Deep muscles) deep Intrinsic layer) Transversospinal group- Semispinalis- where does the capitis extend from?
    cervical and thoracic transverse process to the occipital bone
  56. Deep muscles) deep Intrinsic layer) Transversospinal group- Semispinalis- where do the thoracis and cervisis extend from? (2)
    transverse process of C7 thru T12 to spinous process of cervical (cervisis) and thoracic vertabrea T1-T4 (thorasis)
  57. Deep muscles) deep Intrinsic layer) Transversospinal group- multifidus- where do they extend from?
    transverse process and insert to spinous process of vertebra above
  58. Deep muscles) deep Intrinsic layer) Transversospinal group- multifidus- actions (2)
    -acting together, extend the column

    -acting alone, rotates the body to the opposite side
  59. Deep muscles) deep Intrinsic layer) Transversospinal group- rotatores- where do they extend from?
    transverse process to one vertebrae above or the hgiher one from that one
  60. Deep muscles) deep Intrinsic layer) Transversospinal group- actions as group? (2)
    acting together, they will extend the vertebral column

    acting alone, they will rotate the body to opposite side
  61. Deep muscles) deep Intrinsic layer) Transversospinal group- what muscle is superficial to rotatores?
    multifidus
  62. is quadratus lumborum a back muscle? explain why or why not?
    no, it forms part of the posterior abdominal wall
  63. what space does the quadratus lumborum fill in?
    12th rib and the illiac crest
  64. quadratus lumborum- origin (2)
    -iliac crest and

    -lumbar fascia
  65. quadratus lumborum- inserts? (2)
    -transverse process of upper lumbar vertebrae

    -as well as margin of 12th rib
  66. quadratus lumborum- innervated?
    ventral rami
  67. quadratus lumborum- actions (2)
    acting together, extend lumbar spine

    acting alone, lateral flexion

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