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Anatomy 3401 > Back and Shoulder Superficial > Flashcards

Back and Shoulder Superficial Flashcards

1
Q

Bones of Pectoral Girdle

A

Clavicle and Scapula

- incomplete boney ring

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2
Q

Pectoral girdle purpose

A

attachment + support upper limb

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3
Q

Horseshoe of the pectoral girdle

A

spine of the scapula
acromian
clavicle

(seen from superior view)

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4
Q

Important muscles attached to pectoral girdle

A

Trapezius (insertion)

  • lat. 1/3 of clavicle
  • acromion
  • spine of the scapula

Deltiod (Origin)

  • lat. 1/3 of clavicle
  • acromion
  • spine of the scapula

** SAME

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5
Q

Scapula Landmarks

A

Anterior:
Coracoid process
Subscapular Fossa
Suprascupular notch

Posterior:
Acromion
Spine of the scapula
Supraspinous fossa
infraspinous fossa
Lateral View:
Glenoid cavity of the scapula
supraglenoid tubercle
infraglenoid tubercle
spinoglenoid notch
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6
Q

Ligament that travels through suprascapular notch

A

suprascapular ligament

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7
Q

Humerus landmarks

A 
Anterior:
Greater tubercle
Lesser tubercle
Intertubercular Groove
Deltiod tuberosity
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8
Q

Surround the head of the humerus

A

anatomical neck of the humerus

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9
Q

Surrounds the head of the humerus and the greater/lesser tubercles

A

surgical neck of the humerus (commonly broken)

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10
Q

Posterior Axioappendicular (Thoracoappendicular) Muscles

A

Superficial (extrinsic shoulder):

  • Trapezius
  • Latissimus Dorsi

Deep (extrinsic shoulder):
Levator scapula
rhomboid minor + major

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11
Q

Trapezius origin + insertion

A

Origin:
base of skull
Nuchal ligament
spinous process (C7-T12)

Insertion:
Lat. 1/3 of clavicle
acromion
spine of the scapula

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12
Q

Trapezius action

A

elevation, retraction and depression of the scapula

  • work together: upward rotation of the scapula (glenoid fossa)
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13
Q

Trapezius Innervation

A

spinal accessory nerve

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14
Q

Latissimus Dorsi origin

A

Spinous process of lower thoracic vert.
Thoracolumbar fascia
Iliac crest (+ lumbar vert)

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15
Q

Latissimus Dorsi insertion

A

floor of the inter tubercular groove of the humerus

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16
Q

Latissimus Dorsi action

A

Extension of humerus at shoulder joint
adduction of humerus
medial rotation of humerus

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17
Q

Latissimus Dorsi innervation

A

thoracodorsal nerve

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18
Q

Levator scapulae origin

A

Transverse processes c 1-4

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19
Q

Levator scapulae insertion

A

Medial border of scapula at level ABOVE the spine

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20
Q

Levator scapulae action

A

elevation of scapula

rotation of scapula - glenoid fossa down

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21
Q

Levator scapulae innervation

A

dorsal scapular nerve

nerve also innervates rhomboids

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22
Q

Rhomboid Minor origin

A

Spinous processes C7-T1

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23
Q

Rhomboid Minor insertion

A

medial border of scapula AT level of spine

24
Q

Rhomboid Action

A

Retraction of scapula

Rotation of scapula - glenoid fossa down

25
Q

Rhomboid innervation

A

dorsal scapular nerve

26
Q

Rhomboid Major origin

A

Spinous Processes T2-T5

27
Q

Rhomboid Major insertion

A

Medial border of scapula at level BELOW the spine

28
Q

Scapulohumeral muscles meaning

A

attaches scapula to humerus

29
Q

Scapulohumeral muscles (intrinsic shoulder)

A 
deltoid
supraspinatus*
infraspinatus*
teres minor*
teres major
subscapularis*

*Rotator cuff

30
Q

Intrinsic meaning

A

contained wholly within the organ or body part on which it acts

31
Q

Rotator Cuff Muscles

A

SITS

supraspinatus
infraspinatus
teres minor
subscapularis

32
Q

Suprapinatus origin

A

supraspinous fossa of scapula

33
Q

Suprapinatus insertion

A

greater tubercle of humerus: superior facet*

34
Q

Suprapinatus action

A

abduction of humerus

stabilize shoulder

35
Q

Suprapinatus innervation

A

suprascapular nerve

36
Q

Infraspinatus origin

A

infraspinous fossa of scapula

37
Q

Infraspinatus insertion

A

greater tubercle of humerus: middle facet*

38
Q

Infraspinatus action

A

lateral rotation of the humerus

stabalize shoulder

39
Q

Infraspinatus innervation

A

suprascapular nerve

40
Q

Teres minor origin

A

lateral border of scapula

41
Q

Teres minor insertion

A

greater tubercle of humerus: Inferior facet

42
Q

Teres minor

A

lateral rot. of humerus
stabilize shoulder

(same as infraspinatus, muscles often blended together)

43
Q

Teres minor innervation

A

axillary nerve

44
Q

Subscapularis origin

A

subscapular fossa

anterior side of scapula

45
Q

Subscapularis insertion

A

lesser tubercle of humerus

46
Q

Subscapularis action

A

medial rotation of humerus

stabilize shoulder

47
Q

Subscapularis innervation

A

upper and lower subscapular nerves

48
Q

Deltoids origin is the same as the insertion of what muscle?

49
Q

Deltoid origin

A

lateral 1/3 of the clavicle
acromion
spine of the scapula

50
Q

Deltoid insertion

A

deltoid tuberosity of the humerus

approximately half way down on the lateral side

51
Q

Deltoid action

A

Anterior deltoid:
flexion of humerus
medial rot of humerus

Middle deltoid:
abduction of humerus

Posterior Deltoid:
Extension of the humerus
Lateral rotation of the humerus

52
Q

Deltoid innervation

A

Axillary nerve

53
Q

Teres Major origin

A

Inferior angle of the scapula

54
Q

Teres Major insertion

A

lesser tubercle of the humerus

55
Q

Teres Major action

A

Adduction of the humerus
Medial Rotation of the humerus

(same as latisamus dorsi)

Anatomy 3401 (17 decks)

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