Back and Shoulder

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Author:
gurpleguy
ID:
281253
Filename:
Back and Shoulder
Updated:
2014-08-25 01:38:50
Tags:
medical
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Description:
covers the first week of class
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  1. Trapezius
    origin- external occipital protuberance of the skill, C1-T12 spinous processes

    insertion-clavicle, acromium, medial margin of the scapular spine

    innervation- subtrapezial nerve plexus (CN XI and C3 and C4 of the ventral rami)

    action-  elevation (upper), depression (lower), retraction (middle), superior rotation (upper and lower)
  2. Levator scapulae
    origin- C1-C4

    insertion- medial border of the scapula above spine

    innervation- dorsal scapular nerve

    action- elevation, inferior rotation
  3. Rhombiod minor
    origin- C7-T1

    insertion- medial border of scapula at spine

    innervation- dorsal scapular nerve

    action- retraction, inferior rotation
  4. Rhombiod major
    origin- T2-T5 spinous processes

    insertion- medial border below spine

    innervation- dorsal scapular nerve

    action- retraction, inferior rotation
  5. Latissimus dorsi
    origin- T6-L5 spinous processes, illiac crest, thorocolumbar fascia

    insertion- intertubercular groove of humerus

    innervation- thoracodorsal nerve

    action- medial rotate arm, arm extension, adduction
  6. What muscles are involved in elevation of the scapula?
    levator scapulae, upper trapezius
  7. What muscles are involved in depression of the scapula?
    lower trapezius, lower serratus anterior, gravity
  8. What muscles are involved in protraction of the scapula?
    pectoralis minor. serratus anterior
  9. What muscles are involved in retraction of the scapula?
    rhomboid major, rhomboid minor, middle trapezius
  10. What muscles are involved in superior rotation of the scapula?
    upper and lower trapezius, serratus anterior
  11. What muscles are involved in inferior rotation of the scapula?
    rhomboid major, rhomboid minor, levator scapulae, gravity
  12. What are the three main deep back muscles?
    spinalis, longissimus, iliocostalis
  13. subscapularis
    origin- subscapular fossa

    insertion- lesser tubercle of the humerus

    innervation- upper and lower subscapular nerves

    action- medial rotation of arm
  14. supraspinatus
    • origin- supraspinous fossa
    • insertion- greater tubercle of humerus (supperior facet)

    innervation- suprascapular nerve (C5-C6)

    action- abduction 0-15 degrees
  15. infraspinatus
    origin- infraspinous fossa

    insertion- greater tubercle (middle facet)

    innervation- suprascapular nerve (C5-C6)

    action- lateral rotation of the arm
  16. teres minor
    origin- upper lateral border of scapula

    insertion- greater tubercle (inferior facet)

    innervation- axillary nerver (C5-C6)

    action- lateral rotation of the arm
  17. teres major
    origin- lower lateral border of the scapula

    insertion- crest of the lesser tubercle of the humerus

    innervation- lower subscapular nerve

    action- medial rotation, adduction, extension of arm
  18. deltoid
    origin- clavicle, acromium, lateral margin of scapular spine

    insertion- deltoid tuberosity of humerus

    innervation- axillary nerve

    action- extension, flexion, medial rotation, lateral rotation, abduction 15-100 degrees
  19. pectoralis major
    origin- clavicle, sternum, ribs 1-6

    insertion- crest of the greater tubercle of the humerus

    innervation- medial and lateral pectoral nerve

    action- medial rotation, adduction, flexion of arm
  20. pectoralis minor
    origin- rubs 3-5

    insertion- coracoid process of the scapula

    innervation- medial pectoral nerve

    action- protraction of scapula
  21. serratus anterior
    origin- ribs 1-9

    insertion- medial border of the scapula, costal surface

    innervation- long thoracic nerve (C5-C7)

    action- protraction and superior rotation of lateral angle of scapula, hold scapula against dorsal trunk
  22. quadrangular space
    borders- teres major, teres minor, long head of the tricep, humerus

    axillary nerve, posterior circumflex humeral artery
  23. triangular space
    border- teres major, teres minor, long head of the tricep

    circumflex scapular artery
  24. What muscles are involved in flexion of the shoulder?
    pectoralis major, anterior deltiod, biceps branchii, coracobrachialis
  25. What muscles are involved in extension of the shoulder?
    lattissimus dorsi, teres major, posterior deltoid, long head of the triceps branchii
  26. What muscles are involved in abduction of the shoulder?
    supraspinatus, deltoid
  27. What muscles are involved in adduction of the shoulder?
    latissimus dorsi, teres major, pectoralis major
  28. What muscles are involved in medial rotation of the shoulder?
    subscapularis, teres major, latissimus dorsi, anterior deltoid, pectoralis major
  29. What muscles are involved in lateral rotation of the shoulder?
    infraspinatus, teres minor, posterior deltoid

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