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Anatomy Of The Upper Extremity > Muscles Of The Shoulder Girdle > Flashcards

Muscles Of The Shoulder Girdle Flashcards

Learn the attachments, actions, and innervation of the muscles of the shoulder girdle (54 cards)

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1
Q

Pec minor attachments

A

Superior anterior aspects of ribs 3-5

Medial superior coracoid process

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2
Q

Pec minor actions

A 
Depression
Protraction
Downward rotation
Stabilizes scap
Inspiration
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3
Q

Pec minor innervation

A

C8-T1

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4
Q

Pec major functions

A

Clavicular
- flexion of GH

Sternocostal
- extension of GH from high flexion

Horizontal adduction
Medial rotation
Depress shoulder girdle

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5
Q

Pec major attachments

A

Border of the sternum at clavicular notch to distal body
Inferior clavicle
Ribs 1-6 and costal cartilage
Aponeurosis of external oblique

Lateral lip of bicipital groove

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6
Q

Pec major innervation

A

C5-T1

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7
Q

Subclavius function

A

Depression of clavicle
Stabilize SC
Protects clavicle and first rib

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8
Q

Subclavius attachments

A

Groove for subclavius

Superior aspect of first rib and costal cartilage

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9
Q

Subclavian innervation

A

Nerve to subclavius

C5-6

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10
Q

Serratus anterior functions

A 
Protraction
Upward rotation 
Stabilizes scap 
Elevation 
Depression

Forms medial wall of axilla

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11
Q

Serratus anterior attachments

A

Superior external surface of ribs 1-8

Anterior aspects of medial border of the scap

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12
Q

Serratus anterior innervation

A

Long thoracic nerve

C5-7

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13
Q

Trapezius functions

A 
Upper fibres: scapular
- upward rotation
- elevation
Upper fibres C-spine:
- side flexion
- rotation
- extension

Middle fibres:
- retraction

Lower fibres:

  • downward rotation
  • depression
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14
Q

Trapezius attachments

A

Upper fibres origins:

  • External occipital protuberance
  • nuchal ligament
  • mid 1/3 nuchal line
  • SP of C7

Middle fibres origin:
- SPs and supraspinous ligaments of T1-5

Lower fibres origin:
- SPs and supraspinous ligaments of T6-12

Insertion:

  • posterior lateral 1/3 of clavicle
  • anteromedial acromion process
  • superior lip of spine of scap
  • inferior lip of spine of scap
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15
Q

Trapezius innervation

A

Accessory nerve (C XI)

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16
Q

Latissimus dorsi fx

A

Scapula

  • depression
  • downward rotation

GH

  • adduction
  • extension
  • internal rotation

Anterior rotation of pelvis

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17
Q

Latissimus dorsi attachments

A

Origins

  • SPs of T7-L5
  • Interspinous ligs of T7-L5
  • thoracolumbar fascia
  • posterior aspect ribs 9-12
  • post 1/3 external lip of iliac crest

Insertions

  • inferior angle of scapula
  • medial lip of bicipital groove
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18
Q

Lat dorsi innervation

A

Thoracodorsal nerve C6-8

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19
Q

Levator scapula fx

A

Scapula

  • elevation
  • downward rotation

C-spine

  • lateral flexion
  • rotation
  • extension
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20
Q

Levator scap attachments

A

posterior tubercles of transverse processes of c1-4

  • superior angle of scap
  • sup aspect of medial border of scap
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21
Q

Levator scap innervation

A

Dorsal scapular nerve C4/5

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22
Q

Rhomboid major fx

Study These Flashcards
A
  • Scapular retraction
  • elevation
  • downward rotation
23
Q

Rhomboid major attachments

Study These Flashcards
A

Origins
-SPs and supraspinous ligs of T2-5

Insertion
- medial border of scap, root of spine to inferior angle

24
Q

Rhomboid major innervation

Study These Flashcards
A

Dorsal scapular nerve C4/5

25
Rhomboid Minor fx
- Scapular elevation - retraction - downward rotation
26
Rhomboid minor attachments
- Lower ligamentum nuchae - SPs C7/T1 - medial border at foot of spine of scap
27
Rhomboid minor innervation
Dorsal scapular nerve C4/5
28
Deltoid fx
GH - abduction - extension - external rotation - flexion - internal rotation
29
Deltoid attachments
Origins - anterior border of lateral third of clavicle - lateral aspect of acromion - inf lip of spine of scapula Insertion - deltoid tuberosity
30
Deltoid innervation
Axillary nerve C5/6
31
Supraspinatus fx
``` GH abduction (0-30 degrees) GH stabilization ```
32
Supraspinatus attachments
Supraspinous fossa and deep fascia | Superior aspect of greater tubercle
33
Suprapsinatus innervation
Suprascapular nerve C4-6
34
Infraspinatus fx
- External rotation - adduction - extension - GH stabilization
35
Infraspinatus attachments
- medial 2/3 of infraspinous fossa - deep fascia - posterior middle aspect of greater tubercle - deep fascia
36
Infrapinatus innervation
Suprascapular nerve C4-6
37
Subscapularis fx
- internal rotation - adduction - GH stabilization
38
Subscapularis attachments
- medial 2/3 of subscapular fossa | - anterior aspect lesser tubercle of humerus
39
Subscapularis innervation
Upper and lower subscapular nerve C5-7
40
Teres minor fx
- External rotation - extension - adduction - GH stabilization
41
Teres minor attachments
- posterior aspect of superior 2/3 of lateral border of scap | - posterior inferior aspect of greater tubercle
42
Teres minor innervation
Axillary nerve C5/6
43
Teres major fx
Lats little helper - extension - internal rotation - adduction - forms posterior wall of axilla
44
Teres major attachments
- inferior posterior third of lateral border of scap | - anterior crest of lesser tubercle of humerus
45
Teres major innervation
Lower subscapular C5-7
46
Triceps brachii fx
GH - extension - adduction Elbow - extension
47
Triceps brachii attachments
- Medial head: inferior medial to radial groove - lateral head: superior lateral to radial groove - long head: infraglenoid tubercle - posterior aspect of olecranon process
48
Triceps brachii innervation
Radial nerve C6-T1
49
Coracobrachialis fx
- GH flexion | - Adduction
50
Coracobrachialis attachments
- apex of coracoid process of scap | - medial surface of mid humeral shaft (opposite from deltoid tuberosity)
51
Coracobrachialis innervation
Musculocutaneous nerve C5-7
52
Biceps brachii fx
- gh flexion - elbow flexion - supination
53
Biceps brachii attachments
Long head: supraglenoid tubercle Short head: apex of coracoid process - radial tuberosity and bicipital aponeurosis
54
Biceps brachii innervation
Musculocutaneous C5/6

Anatomy Of The Upper Extremity (4 decks)

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