OIANs shoulder jt/girdle

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Author:
jpowell22
ID:
150167
Filename:
OIANs shoulder jt/girdle
Updated:
2012-04-25 20:32:31
Tags:
functional anatomy
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Description:
muscle oians
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  1. upper trapezius
    O- occiptal bone, nuchal ligament

    I- outer third of clavicle, acromion process

    A- scapular elevation, upward rotation

    N- spinal accessory (XI)
  2. middle trapezius
    O- spinous processes C7-T3

    I- scapular spine

    A- scapular retraction

    N- spinal accessory (XI)
  3. lower trapezius
    O- spinous processes of middle and lower thoracic vertebrae

    I- base of the scapular spine

    A- scapular depression and upward rotation

    N- spinal accessory (XI)
  4. levator scapula
    O- transverse processes of first 4 cervical vertebrae

    I- vertebral border of scapula between the superior angle and spine

    A- scapular elevation and downward rotation

    N- 3rd and 4th cervical nn.
  5. rhomboids
    O- spinous processes of C7-T5

    I- vertebral border of scapula between the spine and inferior angle

    A- scapular retraction an downward rotation

    N- dorsal scapular n.
  6. serratus anterior
    O- lateral surface of the upper 8 ribs

    I- vertebral border of the scapula, anterior surface

    A- scapular protraction and upward rotation

    N- long thoracic n.
  7. pectoralis minor
    O- anterior surface 3rd-5th ribs

    I- coracoid process of the scapula

    A- scapular depression, protraction, downward rotation, scapular tilt
  8. anterior deltoid
    O- lateral third of the clavicle

    I- deltoid tuberosity

    A- shoulder flexion, IR, horizontal add.

    N- axillary n.
  9. middle deltoid
    O- acromion process

    I- deltoid tuberosity

    A- shoulder abd.

    N- axillary n.
  10. posterior deltoid
    O- spine of scapula

    I- deltoid tuberosity

    A- shoulder extension, hyperextension, ER, horizontal abd.

    N- axillary n.
  11. supraspinatus
    O- supraspinous fossa of scapula

    I- greater tubercle of the humerus

    A- shoulder abd.

    N- suprascapular n.
  12. clavicular portion of pectoralis major
    O- medial third of clavicle

    I- lateral lip of biciptal groove of humerus

    A- shoulder flex. to approx. 90

    N- lateral and medial pectoral n.
  13. Sternal portion of pectoralis major
    O- sternum, costal cartilage of first 6 ribs

    I- lateral lip of bicipital groove of humerus

    A- shoulder extension to approx. 90

    N- medial and lateral pectoral n.
  14. pectoralis major
    A- shoulder add., IR, horizontal add

    N- lateral and medial pectoral n.
  15. latissimus dorsi
    O- spinous processes of T7-L5 (via dorsolumbar fascia)

    I- medial lip of bicipital groove of humerus

    A- shoulder ext., add., IR, hyperextension

    N- thoracodorsal n.
  16. teres major
    O- axillary border of scapula near inferior angle

    I- crest below lesser tubercle next to latissimus dorsi attachment anteriorly

    A- ext., add., IR

    N- subscapular n.
  17. infraspinatus
    O-infraspinous fossa of scapula

    I- greater tubercle of humerus

    A- shouler ER, horizontal abd.

    N- suprascapular n.
  18. teres minor
    O- axillary border of scapula

    I- greater tubercle of humerus

    A- shoulder ER, horizontal abd.

    N- axillary n.
  19. subscapularis
    O- subscapular fossa of scapula

    I- lesser tubercle of humerus

    A- shoulder IR

    N- subscapular n.
  20. coracobrachialis
    O- coracoid process of scapula

    I- medial surface of humerus near the midpoint

    A- stabilizes the shoulder jt

    N- musculocutaneous n.

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