Muscles of Shoulder Girdle Flashcards

1
Q

Muscles of the Axioappendicular

A

Pectoralis Major
Pectoralis Minor
Subclavius
Serratus Anterior

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2
Q

PA of Pectoralis Major

A

Clavicular Head: medial ½ of
clavicle; Sternocostal head:
anterior sternum, superior 6 costal
cartilages (ribs)

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3
Q

DA of Pectoralis Major

A

Lateral lip of the intertubercular groove

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4
Q

Nerve Supply Pec Major

A

Lateral and Medial Pectoral Nerves

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5
Q

Action of Pec Major

A

adducts/medially rotates humerus

Clavicular head- flexes humerus

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6
Q

PA Pec Mino

A

3rd-5th ribs near their costal cartilages

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7
Q

DA Pec Minor

A

Coracoid Process of Scapula

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8
Q

Nerve Supply of Pec Minor

A

Medial Pectoral Nerve

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9
Q

Action of Pec Minor

A

Stabilises scapula by drawing it inferiorly and anteriorly on thoracic cage

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10
Q

PA Subclavius

A

Junction of 1st rib and costal cartilage

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11
Q

DA Subclavius

A

Inferior surface of middle third of clavicle

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12
Q

Action Subclavius

A

Anchors and depress clavicle

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13
Q

PA Serratus Anterior

A

External surface of lateral part of ribs 1-8

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14
Q

DA Serratus Anterior

A

Anterior surface of medial border of scapula

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15
Q

Nerve Supply of Serratus Anterior

A

Long Thoracic nerve

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16
Q

Action of Serratus Anterior

A

Protracts scapula and holds it on thoracic wall, rotates scapula (glenoid fossa superiorly)

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17
Q

Posterior Axioappendicular Muscles

A

Superficial- Trapezius, Latmissimus Dorsi

Deep- Levator Scapulae, Rhomboid Major, Rhomboid Minor

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18
Q

Trapezius

A

Superior (descending)
Middle(Transerve)
Inferior(ascending)

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19
Q

PA Trapezius

A

Superior nuchal line, external occiptual protuberance nuchal ligament, Spinal Process of c7-t12 vertebrae

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20
Q

DA Traps

A

Lateral 1/3rd clavicle, acromion and spine of scapula

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21
Q

NERVE Supply of Trapzius

A
Accessory Nerve (CN XI) motor
(3,4 Spinal Nerves (pain and propioception)
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22
Q

Action of Trapezius

A

Superior: elevates scapula
Middle: retracts scapula
Inferior: Depress scapula
SUP+INF= rotate glenoid fossa superiorly

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23
Q

Nerve Supply Subclavius

A

Subclavian Nerve

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24
Q

PA Latissimus Dorsi

A

SPs of inferior 6 thoracic vert, thoracolumbar fascia, iliac crest, inferior 3-4 ribs

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25
Q

DA Latissimus Dorsi

A

Floor of the intertubercular groove

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26
Q

Nerve Supply Latissimus Dorsi

A

Thoracodorsal nerve

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27
Q

Action Latissimus Dorsi

A

Extends, adducts and medially rotates the humerus

28
Q

PA Levator Scapulae

A

TPs C1-4 vertebrae

29
Q

DA Levator Scapulae

A

Medial border of the scapula superior to the spine of the scapula

30
Q

Nerve Supply Levator Scapulae

A

Dorsal scapular nerve & Cervical nerves C3,4

31
Q

Action of Levator Scapulae

A

Elevates scapula and inferiorly rotates glenoid fossa

32
Q

PA Rhomboid Minor

A

Minor: nuchal lig, SPs of C7-T1;

33
Q

DA Rhomboid Minor

A

Minor: medial end of scapula spine

34
Q

Nerve Supply of Rhomboid

A

Dorsal scapular nerve

35
Q

Action of Rhomboids

A

Retract scapula, inferiorly rotate glenoid fossa, fix scapula against thoracic wall

36
Q

PA Rhomboid Major

A

; Major: SPs of T2-T5

37
Q

DA Rhomboid Major

A

Medial border of scapula, below spine

38
Q

Scapulohumeral Muscles

A

Deltoids
Teres Major
Rotator Cuff: Supraspinatus, Teres Minor, Infraspinatus, Subscapularis

39
Q

PA Deltoid

A

Lateral 1/3rd of clavicle, acromion and spine of scapula

40
Q

DA Deltoid

A

Deltoid tuberosity of humerus

41
Q

Nerve Supply Deltoid

A

Axillary Nerve

42
Q

Action Deltoid

A

Anterior: flexes/medially rotates
Middle: Abducts
Posterior: extends and laterally rotates arm

43
Q

PA Teres Major

A

Posterior surface of inferior angle of scapula

44
Q

DA Teres Major

A

Medial Lip of the Intertubercular groove

45
Q

Nerve Supply Teres Major

A

Lower Subscapular Nerve

46
Q

Rotator Cuff

A

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

47
Q

PA Suprapinatus

A

Supraspinous Fossa of Scapula

48
Q

DA Supeaspinatus

A

Superior facet of greater tubercle

49
Q

NS Supraspinatus

A

Suprascapular Nerve

50
Q

Action of Supraspinatus

A

Initiates and assists deltoid in abduction of arm

Stabilises GH joint

51
Q

Relationship of Supraspinatus with GH joint and subacromial bursa

A

Supraspinatus is separated from coracromial arch by subacromial bursa

52
Q

PA Infraspinatus

A

Infraspinous Foss

53
Q

DA Infraspinatus

A

Middle facet of the tubercule of the humerus

54
Q

Nerve Supply Infraspinatus

A

Suprascapular

55
Q

Action of Infraspinatus

A

Laterally rotates humerus

Stabilises GH joint

56
Q

PA Teres Minor

A

Middle part of the lateral border of the scapula

57
Q

DA Teres Minor

A

Inferior facet of the greater tubercle of the humerus

58
Q

Nerve Supply of Teres Minor

A

Axillary Nerve

59
Q

Action of Teres Minor

A

Laterally rotates humerus

Stabilises GH joint

60
Q

PA Subscapularis

A

Subscapular Fossa

61
Q

DA Subscapularis

A

Lesser Tubercle of the humerus

62
Q

Nerve Supply of Subscapularis

A

Upper and lower subscapular nerve

63
Q

Action of the Subscapularis

A

Medially rotates arm

Stabilising GH joint

64
Q

Action of Teres Major

A

Medial rotate my abs Adduct

65
Q

Action of Teres major

A

Adduct and medially rotate