MOINA Spine and Trunk

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Author:
annalyze
ID:
281611
Filename:
MOINA Spine and Trunk
Updated:
2014-08-31 02:02:03
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Muscles, Origin, Insertion, Action
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  1. Trapezius
    • Origin: Occipital bone, ligamentum nuchae, spinous processes of C7, T1-T6
    • Insertion: Lateral 1/3 of clavicle, acromion and spine of scapula
    • Nerve Supply: Spinal Part of Accessory Never (motor) and C3 and 4 (sensory)
    • Action: 
    •           Upper fibers: elevates scapula
    •           Middle fibers: draws scapula medially
    •           Lower fibers: pulls medial border of scapula downward
  2. Latissimus Dorsi
    • Origin: Iliac crests, lumbar fascia, spines of lower six thoracic vertebra, inferior angle of scapula, lower three or four ribs
    • Insertion: Floor of the bicipital groove of humerus
    • Nerve: Thoracodorsal nerve (C6-C8)
    • Action: Extends, Adducts, Medially Rotates arm
  3. Levator Scapulae
    • Origin: Transverse processes of first four cervical vertebra
    • Insertion: Medial border of scapula
    • Nerve Supply: C3, C4, dorsal scapular nerve
    • Action: Raises medial border of scapula
  4. Rhomboid Major
    • Origin: 2nd to 5th thoracic spines
    • Insertion: Medial border of scapula
    • Nerve Supply: dorsal scapular nerve
    • Action: Raises medial border of scapula upward and medially
  5. Rhomboid Minor
    • Origin: Ligamentum nuchae, spines of C7 and T1
    • Insertion: Medial border of scapula
    • Nerve Supply: dorsal scapular nerve
    • Action: Raises medial border of scapula upward and medially
  6. What are the superficial muscles?
    • Trapezius
    • Latissimus Dorsi
    • Levator Scapulae
    • Rhomboid Major
    • Rhomboid Minor
  7. Serratus Posterior Superior
    • Origin: Upper cervical and lower thoracic spines
    • Insertion: Upper ribs
    • Nerve Supply: Intercostal Nerves
    • Action: Raises ribs therefore inspiratory muscle
  8. Serratus Posterior Inferior
    • Origin: Lower thoracic and upper lumbar spines
    • Insertion: Lower ribs
    • Nerve Supply: Intercostal nerves
    • Action: Depresses ribs therefore expiratory
  9. What are the intermediat
  10. What are the intermediate muscles of the back?
    • Serratus Posterior Superior
    • Serratus Posterior Inferior
  11. What comprise the Erector Spinae Muscles?
    • Iliocostalis
    • Longissimus
    • Spinalis
  12. What comprise the Transversospinalis muscles?
    • Semispinalis
    • Multifidus
    • Rotatores
  13. Erector Spinae
    • Origin: Posterior sacrum, iliac crest, sacrospinous and supraspinous ligament, spinous processes of lower lumbar and sacral vertebra
    • Insertion:
    •      Iliocostalis: angles of lower ribs, cervical tranverse processes
    •      Longissimus: between tubercles and angles of ribs, transverse processes of thoracic and cervical vertebra, mastoid process
    •      Spinalis: spinous process of upper thoracic and midcervical vertebrae
    • Nerve Supply: Dorsal rami of each region
    • Action: Extend and laterally bend vertebral column and head
  14. Multifidus
    • Origin: sacrum, ilium, transverse processes of T1-T12, articular processes of C4-C7
    • Insertion: spinous processes of vertebra above, spanning two to four segments
    • Nerve Supply: Dorsal rami of each region
    • Action: bilaterally extends vertebral column; unilaterally laterally flexes; contralaterally rotates vertebral column; stabilizes spine
  15. Rotatores (Longus and Brevis)
    • Origin: Transverse processes of cervical, thoracic, and lumbar vertebra
    • Insertion: Lamina (brevis) and transverse processes (longus) of vertebra above, spanning one to two segments
    • Nerve Supply: Dorsal rami of spinal nerves
    • Action: Bilaterally extends vertebral column; Unilaterally rotates vertebral column to opposite side; stabilizes spine
  16. Semispinalis
    • Origin: Transverse process of C4-T12
    • Insertion: Spinous process of cervical and thoracic vertebrae
    • Nerve Supply: Dorsal rami of spinal nerves
    • Action: Extends head, neck, and thorax; rotates VC to opposite side
  17. Interspinales
    • Origin: Spinous processes
    • Insertion: Adjacent spinous processes
    • Nerve Supply: Dorsal rami of spinal nerves
    • Action: Aid in the extension of VC
  18. Intertransversarii
    • Origin: Extend between adjacent transverse processes of vertebrae
    • Insertion: Extend between adjacent transverse processes of vertebrae
    • Nerve Supply: Dorsal rami of spinal nerves
    • Action: Assist in the lateral flexion of vertebral column
  19. Quadratus Lumborum
    • Origin: Iliolumbar ligament, iliac crest, tips of transverse processes of lower lumbar vertebrae
    • Insertion: 12th rib
    • Nerve Supply: Lumbar plexus
    • Action: Fixes 12th rib during inspiration; depresses 12th rib during forced expiration; laterally fixes vertebral column to same side
  20. Rectus Abdominis
    • Origin: Symphysis pubis and pubic crest
    • Insertion: 5th, 6th, 7th costal cartilages and xiphoid process
    • Nerve Supply: Lower six thoracic nerves
    • Action: Supports and compresses abdominal contents, flexes the vertebral column, accessory muscle for expiration
  21. External Oblique
    • Origin: Lower eight ribs
    • Insertion: Xiphoid process, linea alba, pubic crest, pubic tubercle, iliac crest
    • Nerve Supply: Lower six thoracic nerve, ilioinguinal and iliohypoglossal nerves
    • Action: Supports and compresses abdominal contents; assists in flexion and rotation of trunk; assists in forced expiration, defecation, micturition, vomiting, and parturition.
  22. Internal Oblique
    • Origin: Lumbar fascia, iliac crest, lateral 2/3 of inguinal ligament
    • Insertion: Lower three costal cartilages and ribs, xiphoid process, linea alba, symphysis pubis
    • Nerve Supply: Lower six thoracic nerve, ilioinguinal and iliohypoglossal nerves
    • Action: Supports and compresses abdominal contents; assists in flexion and rotation of trunk; assists in forced expiration, defecation, micturition, vomiting, and parturition.
  23. Transversus
    • Origin: Lumbar fascia, lower six costal cartilages, iliac crest, lateral 2/3 of inguinal ligament
    • Insertion: xiphoid process, linea alba, pubis symphysis
    • Nerve Supply:  Lower six thoracic nerve, ilioinguinal and iliohypoglossal nerves
    • Action: Compression of abdominal contents
  24. Diaphragm
    • Origin: Xiphoid process, lower six costal cartilages, first three lumbar vertebrae
    • Insertion: Central Tendon
    • Nerve Supply: Phrenic Nerve
    • Action: Very important muscle for inspiration: increases the vertical diameter of thorax by pulling the central tendon downward, assists the raising of the ribs

    used in weight training and abdominal straining
  25. External Intercostals
    • Origin: Inferior border of rib
    • Insertion: Superior border of rib below
    • Nerve Supply: Intercostal nerves
    • Action: when the 1st rib is fixed, it raises the ribs for inspiration
  26. Internal Intercostals
    • Origin: Inferior border of rib
    • Insertion: Superior border of rib below
    • Nerve Supply: Intercostal nerves
    • Action: with the last rib fixed by abdominal musculature, it depresses the ribs during expiration
  27. Levatores Costarum
    • Origin: Tips of transverse processes of C7 to T1
    • Insertion: Rib below
    • Nerve Supply: Posterior rami of thoracic spinal nerve
    • Action: Raises rib
  28. Splenius Capitis
    • Origin: Ligamentum nuchae, spinous processes of C7 to T6
    • Insertion: Mastoid process and lateral end of superior nuchal line
    • Nerve Supply: Dorsal primary rami of spinal nerves C2 to C6
    • Action: Capital flexion; Extends and laterally bends head and neck and rotates head to axis to same sime
  29. Splenius Cervicis
    • Origin: Ligamentum nuchae, Spinous processes of C7 to T6
    • Insertion: Posterior tubercles of the transverse processes of C1-C3
    • Nerve Supply: Dorsal primary rami of spinal nerves of C2-C6
    • Action: Capital flexion; extends and laterally bends head and neck and rotates head on axis to the same side
  30. Rectus Capitis Posterior Minor
    • Origin: Posterior tubercle of atlas
    • Insertion: Inferior nuchal line
    • Nerve Supply: Suboccipital nerve
    • Action: Bilaterally extend head
  31. Rectus Capitis Posterior Major
    • Origin: spinous process of neck
    • Insertion: inferior nuchal line
    • Nerve Supply: suboccipital nerve
    • Action: bilaterally extends head and neck and unilaterally rotates head to same side
  32. Obliquus Capitis Inferior
    • Origin: Spinous process of axis
    • Insertion: Transverse process of atlas
    • Nerve Supply: Occipital Nerve
    • Action: Rotates head to turn face to same side
  33. Obliquus Capitis major
    • Origin: transverse process of atlas
    • Insertion: Occipital bone
    • Nerve Supply: Suboccipital nerve
    • Action: Extends and laterally bends head

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