Muscle attachments

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Author:
gcostabile
ID:
48250
Filename:
Muscle attachments
Updated:
2010-11-08 19:28:03
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Thorax Back Abdomen
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Description:
Anatomy
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  1. Serratus posterior superior
    Lower part of ligamentum nuchae and spines of C7 and T1-3 TO upper borders and outer surfaces of ribs 2-5 lateral to their angles
  2. Serratus posterior inferior
    Spines of T11-12 and L1-3 TO lower borders and outer surfaces of ribs 9-12 lateral to their angles
  3. Splenious capitis
    Lower half of ligamentum nuchae and spines of C7-T4 TO mastoid process and lateral third of superior nuchal line
  4. Splenius cervicis
    Spines of T3-6 TO posterior transverse tubercles of C1-3
  5. Iliocostalis cervicis, thoracis, and lumborum
    Angles of the ribs TO posterior transverse tubercles as high as C4
  6. Longissimus capitis, cervicis, and thoracis
    Transverse processes and lower 9 or 10 ribs between their tubercles and angles TO mastoid process
  7. Spinalis thoracis, (sometimes cervicis)
    L2 TO T2
  8. Semispinalis capitis, cervicis, and thoracis
    • Lower thoracic region TO Skull (Semispinalis capitis inserts between the
    • superior and inferior nuchal lines of the occipital bone)
  9. Multifidus
    Sacrum: S4 TO Axis: C2
  10. Rotatores brevis and longus
    Transverse process TO spinous process (brevis = one vertebrae, longus = two vertebrae)
  11. Rectus capitis posterior major
    Spine of axis TO lateral part of inferior nuchal line
  12. Rectus capitis posterior minor
    Posterior tubercle of atlas TO medial part of inferior nuchal line
  13. Obliquus capitis inferior
    Spine of axis TO transverse process of atlas
  14. Obliquus capitis superior
    Transverse process of atlas TO between superior and inferior nuchal lines
  15. External intercostals
    Rib above TO rib below
  16. Internal intercostals´╗┐
    Rib above TO rib below
  17. Innermost intercostals´╗┐
    Rib above TO rib below
  18. Transversus thoracis
    Lower third of posterior sternal surface and xiphoid process and costal cartilages of ribs 4 or 5-7 TO costal cartilages of ribs 2-6
  19. Levatores costarum brevis and longus
    Tips of the C7-T11 transverse processes TO rib below or 2 ribs below, between the tubercle and angle
  20. Sternal part of the diaphragm
    Two fleshy slips from back of xiphoid process TO central tendon
  21. Costal part of the diaphragm
    • Inner surfaces of lower six costal cartilages and adjacent portions of their ribs on each side TO central
    • tendon
  22. Lumbar part of the diaphragm
    Medial and lateral arcuate ligaments or lumbocostal arches, and anterolateral surfaces of the upper three lumbar vertebral bodies and discs by the muscular right and left crura TO central tendon
  23. External abdominal oblique
    Outer surfaces and lower borders of ribs 5-12 interdigitating with serratus anterior above and latissimus dorsi below TO anterior half of outer lip of iliac crest
  24. Internal abdominal oblique
    • Anterior 2/3 of intermediate line of iliac crest, lateral 2/3 of inguinal ligament, and thoracolumbar fascia TO posterior fibers to inferior borders of lower 3 or 4 ribs, intermediate fibers to outer surfaces and lower borders of
    • 7-9 costal cartilages and linea alba, and lowest fibers curve downward and medially to
    • pubic crest and pecten pubis.
  25. Transversus abdominis
    • Inner surfaces of lower 6 costal cartilages, anterior 2/3 of inner lip of iliac crest, lateral third of inguinal ligament, and thoracolumbar fascia TO linea alba, and lowest fibers curve downward and medially to
    • pubic crest and pecten pubis.
  26. Rectus abdominis
    Pubic tubercle, crest, and symphysis TO 5-7 costal cartilages, side of xiphoid process
  27. Quadratus lumborum
    Iliocolumbar ligament and adjacent portion of iliac crest TO lower border of 12th rib, transverse processes of upper four lumbar vertebrae

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