Ch2 muscles

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  1. origin of the serratus anterior
    ribs 1-9
  2. insertion of the serratus anterior
    scapula
  3. action of the serratus anterior
    with shoulder fixed, elevates ribs 1-9
  4. Back Muscles:
    -Levator Scapulae
    -Rhomboideus Major
    -Rhomboideus Minor
    -Trapezius
    Muscles of Inspiration
  5. provides neck support and helps to elevate the scapula
    levator scapulae
  6. origin of the levator scapulae
    transverse processes of C1-C4
  7. insertion of the levator
    medial border of scapula
  8. action of the levator scapulae
    elevates scapula
  9. lies deep to the trapezius
    rhomboideus major and minor
  10. origin of the rhomboideus major and minor
    spinous process of T2-T5 (major); spinous process of C7-T1 (minor)
  11. insertion of the rhomboideus major and minor
    scapula
  12. action of the rhomboideus major and minor
    stabilizes shoulder girdle
  13. massive muscle that makes up superficial upper back and neck
    trapezius
  14. origin of the trapezius
    spinous processes of C2 to T12
  15. Insertion of the traps
    scapula and superior surface of clavicle
  16. action of the traps
    elongation of the neck and head control
  17. Muscles of the Thorax, Back, and Upper Limb
    -Internal Intercostal
    -Transversus Thoracis
    -Subcostals
    -Serratus Inferior
    -Latissimus Dorsi
    Muscles of Expiration
  18. origin of the internal intercostals (interosseous portion)
    superior margin of each rib
  19. insertion of the internal intercostals (interosseous portion)
    run up and medially insert into inferior surface of the rib above
  20. action of the internal intercostals (interosseous portion)
    depresses ribs 1-11
  21. Origin of the Transverse thoracis
    lower third of the sternum
  22. Insertion of the Tranverse Thoracis
    Inner chondral surface of ribs 2-6
  23. Action of the Transverse Thoracis
    contraction decreases the volume of the thoracic cavity
  24. Vary in number; generally course parallel to the internal intercostal muscles
    Subcostals
  25. origin of the subcostals
    inner thorax, inner surface of rib near angle
  26. insertion of the subcostals
    inner surface of second or third rib below
  27. action of the subcostals
    depresses thorax
  28. origin of the serratus posterior inferior
    spinous processes of T11-T12 and L1-L3
  29. Insertion of the serratus posterior inferior
    lower margin of lower five ribs
  30. action of the serratus posterior inferior
    pull the rib cage down
  31. origin of the Latissimus Dorsi
    lumbar, sacral, and lower thoracic vertebrae
  32. Insertion of the Latissimus Dorsi
    humerus
  33. action of the Latissimus Dorsi
    stabilizes posterior abdominal wall for expiration
  34. Abdominus muscles 
    -Transversus Abdominis
    -Internal Oblique Abdominis
    -External Oblique Abdominis
    -Rectus Abdominis
    -Quadratus Lumborum
    Muscles of Expiration
  35. abdominal aponeurosis, linea alba, and the linea semulnaris form the
    abdominal skeleton
  36. tendonous expansion across the abdomen which serves as an attachment point for muscles
    abdominal aponeurosis
  37. "white line" runs from the xiphoid process to the pubic symphysis
    linea alba
  38. division of the linea alba into two sheets of aponeurosis
    linea semilunaris
  39. biological functions of the abdomen
    force air out of the lungs, vomiting, thoracic fixation, childbirth
  40. deepest layer of the anterior abdominal muscles
    transversus abdominis
  41. origin of the transversus abdominis
    posterior abdominal wall at the vertebral column
  42. insertion of the transversus abdominis
    transversus abdominis aponeurosis, inner ribs 6-12, and inferior attachment at the pubis
  43. action of the transversus abdominis
    compress abdomen
  44. found between external oblique and transverse abdominis
    internal oblique abdominis
  45. origin of the internal oblique abdominis
    inguinal ligament, ilac crest, the cartilaginous portion of the lower ribs, abdominal aponeurosis
  46. insertion of the internal oblique abdominis
    linea alba
  47. action of the internal oblique abdominis
    rotates and flexes trunk, compresses abdomen
  48. most superficial and largest of the abdominal muscles
    external oblique abdominis
  49. origin of the external oblique abdominis
    lower seven ribs
  50. insertion of the external oblique abdominis
    iliac crest, inguinal ligament, and abdominal aponeurosis
  51. action of the external oblique abdominis
    flexes vertebral column, trunk rotation, compresses abdomen
  52. midline muscles on sides of linea alba made up of three fibrous bands that cross the stomach
    rectus abdominis
  53. origin of the rectus abdominis
    originates as four or five segments at the pubic inferiorly
  54. insertion of the rectus abdominis
    xiphoid process of sternim and cartilage of last true rib (7) and the false ribs
  55. action of the rectus abdominis
    compresses abdomen
  56. located on the dorsal portion of the abdominal wall
    quadratus lumborum
  57. origin of the quadratus lumborum
    iliac crest
  58. insertion of the quadratus lumborum
    transverse processes of the lumbar vertebrae and inferior border of rib 12
  59. action of the quadratus lumborum
    unilateral contraction-lateral movement of trunk; bilateral contraction-abdominal compression

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Author:
 brianklein
ID:
 282372
Filename:
 Ch2 muscles
Updated:
2014-09-08 04:46:33
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