anatomy of mini 1

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anatomy of mini 1
2011-12-07 15:19:26
ross semester mini anatomy back

anatomy of the back an shoulder
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  1. trapezius innervation
    cn 11
  2. latissimus dorsi innervation
    thoracodorsal nerve (tdn)
  3. levator scapulae innervation
    dorsoscapular nerve (dsn)
  4. rhomboid major innervation
    dorsoscapular nerve
  5. rhomboid minor innervation
    dorsoscapular nerve
  6. trapezius origin
    medial nuchal line, ext occipital protuberance, nuchal ligament, spinous process of C7-T12
  7. latissimus dorsi origin
    spinous process of T7-T12, thoracolumbar fascia, iliac crest, last 3-4 ribs
  8. levator scapulae origin
    transverse process of C1-C4
  9. rhomboid major origin
    spinous process of T2-T5
  10. rhomboid minor origin
    nuchal ligament, spinous process of C7-T1
  11. trapezius insertion
    clavicle, acromion and spine of scapula
  12. latissimus insertion
    intertubercular groove of humerus
  13. levator scapula inserion
    medial border of scapula
  14. rhomboids insertion
    medial border of scapula
  15. trapezius action
    elevate, retract and rotate scapula superiorly
  16. latissimus dorsi action
    extend, adduct, medially rotate humerus
  17. lavator scapula action
    elevatescapula and rotates inferiorly
  18. rhomboids action
    • retract scapula and rotates it inferiorly
    • fix scapula to thoracic wall
  19. serratus posterior superior
    • o-nuchal ligament, spinous process of C7-T3
    • i-superior border of ribs 2-4
    • n- intercostal nerves (T1-4/T2-5)
    • a- proprioception/ elevates ribs during forced inhalation
  20. serratus posterior inferior
    • o- spinous process of T11-L2
    • i- inferior border of ribs 8/9-12
    • n- intercostal nerves (T9-12)
    • a- proprioception/ depresses ribs during forced exhalation
  21. splenius capitus and cervivis
    • o- nuchal ligament, spinous process of C7-T3/4
    • i- (cap) mastoid process of temporal bone, laterla 1/3 of the nuchal line
    • (cer) transverse process of C1-3/4
    • n- POSTERIOR rami of spinal nerves
    • a- (alone) lateral flexion of head, (together) extension of head and neck
  22. erector spinae muscles
    • l-'intermediate muscles of the back'
    • m-iliocostalis, longissimus, spinalis
    • i- DORSAL rami of spinal nerves
  23. erector spinae innervation
    POSTERIOR rami of spinal nerves
  24. Glenohumeral joint ligaments and main functions
    • Glenohumeral (sup, mid, inf) anterior
    • Coracoacromial- prevents superior displacement
    • Tranverse humeral- makes canal with IT sulcus for the long head bicep tendon
  25. Bursa of the shoulder joint
    • subscapularis- protects subscapular tendon
    • subacromial- protects supraspinatus tendon
  26. deltoid
    • i- axillary nerve (C5,6)
    • a- abduction after initial 15, stabalization of GH joint
    • (alone) flexion and extension of arm
    • o- clavicle, acromion and spine of scapua
    • i- deltoid tuberosity
  27. teres major
    • i- lower subscapular
    • a- adduction and medial rotation, stabalizes humeral head in glenoid cavity
    • o- inferior angle of scapula
    • i- medial lip of IT sulcus
  28. supraspinatus
    • RCM
    • i- suprascapular n
    • a- adduction initial 15, stabalize GH joint
    • o- supraspinatus fossa
    • i- greater tubercle (sf)
  29. infraspinatus
    • RCM
    • i- suprascapular n
    • a-lateral rotation and adduct humerus(with teres minor), stabalize GH joint
    • o- infraspinatus fossa
    • i-greater tubercle (mf)
    • test- lateral rotation with elbow flexed
  30. teres minor
    • RCM
    • i-axillary n
    • a- lateral rotation and adducts humerus(with infraspinatus), stabalize GH joint
    • o-interior angle of scapula
    • i- greater tubercle (if)
    • test- lateral rotation of arm with elbow flexed
  31. subscapularis
    • i- upper and lower subscapular n
    • a- medial rotation and adduction of humerus, stabalize GH joint
    • o-subscapular fossa
    • i- lesser tubercle
    • test- lift dorsum of hand off back
  32. painful arc syndrome
    • Ca deposits in supraspinatus tendon cause subacromial bursitis
    • pain during 50-130 ABduction
  33. triangular space
    circumflex scapular a

    • teres minor l
    • csa o head of triceps
    • teresmajor n
    • g
  34. triangular interval
    • radial n, deep brachial artery(profundus)= *
    • teres major
    • l l
    • o * a heads of triceps
    • n t.
    • g
  35. quadrangular space
    • axillary n, posterior circumflex humeral artery= *
    • teres minor
    • l l
    • o * a heads of tricep
    • ng t.
    • teres major
  36. Horners syndrome
    • lack of sympathetic outflow to the region of th eye, causing ptosis, meiosis, anophthalmosis and anhydrosis
    • drooping of the eyelid, contstriction of th pupil, sagging of the eye and no sweat areas of the face
  37. Raynaud syndrome
    excessive SNS output to vessels of the fingers and toes causing blanching of the skin due to lack of blood flow
  38. these make up the collateral circulation for the scapular region
    circumflex scapular a, deep transverse cervical a and suprascapular a
  39. sympathetic nerves supplying the face or eyelid
  40. sympathetic nerves supplying the upper limb
    T3, 4, 5
  41. sympathetic nerves supplying the lower limb
  42. pec major
    • n- medial and lateral perctoral
    • a- tog-add and medial rotate scap, draw scap anteroinferiorly
    • clav head- flex humerus
    • sternocostal head-extend hum from flexed position
    • o- clavicle sternum and superior 6 costal carltilages
    • i- lateral lip of IT sulcus
  43. pec minor
    • n- medial pectoral n
    • a- stabalize scap(draw anteroinferiorly against thoracic wall
    • o- ribs 3-5 near costal cartliges
    • i- coracoid process
  44. serratus anterior
    • n- long thoracic n (C5,6,7)
    • a-PROTRACT scap, rotates scap
    • o-lateral portion of ribs 1-8
    • i-anterior surface of medial border of scapula
  45. subclavius
    • n-nerve to subclavius (C5-6)
    • a-anchors and depresses clavicle
    • o-junction of R1 and its costal cartlige
    • i-inferior surface of medial 1/3 of clavicle
  46. Jefferson burst
    • - C1 fracture from something being dropped on head
    • - Vertebral a. damage more likely that spinal cord
  47. hangmans fracture
    • - C2 fracture
    • - spinal cord damage likely
  48. IVD
    • - symphysis joint with vertebral body
    • - none at skull-//-C1-//-C2, saccrum or coccyx
  49. vertebral column ligaments dorsal to ventral
    supraspinous-interspinous- ligamentum flavum- (vetebral canal)- posterior longitudinal- (vert body)- anterior longitudinal(whiplash victim)
  50. vertebral column vasculature posterior to anterior
    • - post ext-post int-ant int-(vert body)-ant ext
    • - valveless, which is opportunistic for metastasis
  51. sprain
    only ligamentous tissue involved
  52. strain
    microscopic tearing of muscle fibers
  53. main control center of the ANS
    hypothalmus and brain stem
  54. ANS division
    SNS- T1-L2(lateral horn), short pre-, long post-, diffuse reaction

    • PNS- C3,7,9,10 and S2-S4(lateral horn), long pre-, short post-, discrete reaction
    • - no PNS fibers in body wall or limbs
  55. ganglion impar
    fusion of sympathetic chain gang at coccyx
  56. rami
    • connect anterior ramus to sympathetic chain gang
    • white- entrance chain gang(myelinated fibers)
    • gray- exit chain gang(unmyelinated fibers)

    only one rami(gray) T1 and below L2, because there are no symp fibers entering the chain gang above and below these levels, only exiting
  57. 3 main functions of SNS
    • vasomotor- vasculature
    • sudomotor- sweat glands
    • pilomotor- hair follicles
  58. carotid plexus
    • sympathetic fiber entrance into cranium
    • around internal carotid artery