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MS 1 > Muscles of the Shoulder and Arm > Flashcards

Muscles of the Shoulder and Arm Flashcards

1
Q

What muscles connect the upper limb to the vertebral column?

A

Trapezius,
Latissimus Dorsi,
Levator Scapulae, Rhomboideus Minor, Rhomboidius Major

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2
Q

What muscles connect the scapula to the humerus?

A

Deltoid
Teres Major

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3
Q

What are the muscles of the rotator cuff?

A

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

(S.I.T.S)

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4
Q

What muscles connect the upper limb to the thoracic wall?

A

Pectoralis Minor
Serratus Anterior
Subclavius

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5
Q

What is the origin of trapezius?

A

Medial 1/3 of the superior nuchal line, inion (EOP), ligamentum nuchae and SP of C7-T12

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6
Q

What is the insertion of trapezius?

A

Lateral 1/3 of the clavicle, acromion process and the spine of the scapula.

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7
Q

What nerves ennervates the trapezius?

A

Accessory nerve (cranial nerve XI), and cervical nerve C3 & C4

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8
Q

What is the origin of latissimus dorsi?

A

SP of T7-S5 via the thoracolumbar fascia, posterior Iliac crest, ribs 10-12 & the inferior angle of the scapula.

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9
Q

What is the insertion of Latissimus Dorsi?

A

Floor of the bicipital groove of the humerus and medial lip of the intertubulat sulcus.

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10
Q

What nerve(s) ennervate lattissimus dorsi?

A

Thoracodorsal C(6),7,8

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11
Q

What is the origin of elevator scapulae?

A

The posterior tubercles of TVPs C1-C4

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12
Q

What is the insertion of lavator scapulae?

A

Vertebral border of the scapula superior to the spine.

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13
Q

What ennervates elevator scapulae?

A

Dorsal scapular n C5 and cervical n C3 and C4

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14
Q

What is the origin of rhomboid minor?

A

SP of C7-T1

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15
Q

What is the insertion of rhomboid minor?

A

Vertebral border of the scapula including the root and above

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16
Q

What nerve ennervates rhomboid minor?

A

Dorsal scapular nerve C5

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17
Q

What is the origin of rhomboid major?

A

SP of T2-T5

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18
Q

What is the insertion of rhomboid major?

A

Vertebral border of the scapula below the spine

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19
Q

What nerve ennervates rhomboid major

A

Dorsal scapular n C5

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20
Q

What is the origin of deltoid?

A

Lateral 1/3 of the clavicle, acromion process and the spine of scapula (inferior border).

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21
Q

What is the insertion of deltoid?

A

Deltoid tuberosity of the humerus

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22
Q

What nerve ennervates deltoid?

A

Axillary nerve (C5,6)

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23
Q

What is the origin of teres major?

A

Lower 1/3 of the lateral border of the scapula and across inferior angle to the medial border (excluding tip)

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24
Q

What is the insertion of teres major?

A

Medial lip of intertubercular sulcus of humerus (crest of the lesser tubercle of the humerus)

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25
Q

What nerve ennervates teres major?

A

Lower subscapular nerve (C5,6)

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26
Q

What is the origin of supraspinatus?

A

Supraspinatus fossa

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27
Q

What is the insertion of supraspinatus?

A

Superior facet on greater tubercle of the humerus and the jt capsule

28
Q

What ennervates supraspinatus?

A

Suprascapular nerve (C5,6)

29
Q

What is the origin of infraspinatus?

A

Infraspinous fossa

30
Q

What is the insertion of infraspinatus?

A

Middle facet on greater tubercle of the humerus and the joint capsule.

31
Q

What ennervates infraspinatus?

A

Supscapular nerve (C5,6)

32
Q

What is the origin of teres minor?

A

Lateral border of scapula (posterior surface, superior 2/3)

33
Q

What is the insertion of teres minor?

A

Inferior facet of greater tubercle of the humerus and jt capsule.

34
Q

What ennervates teres minor?

A

Axillary nerve (C5,6)

35
Q

What is the origin of subscapularis?

A

Subscapular fossa

36
Q

What is the insertion of subscapularis?

A

Lesser tubercle of the humerus and the jt capsule

37
Q

What ennervates subscapularis?

A

Upper and lower subscapular nerves (C5,6)

38
Q

What is the origin of the clavicular head of pec major?

A

Anterior surface of medial half of clavicle

39
Q

What is the origin of the sternocostal head of pec major?

A

Anterior surface of sternum and the upper 6 costal cartilages

40
Q

What is the origin of the abdominal head of pec major?

A

Aponeurosis of external obliques

41
Q

What is the insertion of pec major?

A

Lateral lip of intertubercular sulcus and the crest of the greater tubercle of the humerus.

42
Q

What ennervates pec major?

A

Lateral and medial pectoral nerve

43
Q

What is the origin of pec minor?

A

Ribs 3-5

44
Q

What is the insertion of pec minor?

A

Coracoid process of the scapula (medial surface)

45
Q

What enervates pec minor?

A

Medial pectoral nerve (C8, T1)

46
Q

What are the origins of serratus anterior?

A

ribs 1-8 or 9

47
Q

what is the insertion for serratus anterior?

A

anterior surface of the medial border of the scapula and inferior angle.

48
Q

what enervates serratus anterior?

A

Long thoracic nerve (C5-C8)

49
Q

what is the origin of subclavius?

A

1st rib and it’s costal cartilage

50
Q

What is the insertion of subclavius?

A

inferior surface of clavicle (subclavian groove)

51
Q

what enervates subclavius?

A

nerve to subclavius (C5,6)

52
Q

What is the origin of coraco-brachialis?

A

coracoid process of the scapula (tip w/ sh. head of biceps)

53
Q

what is the insertion of coraco-brachialis?

A

Middle of the medial shaft of humerus

54
Q

what enervates coraco-brachialis?

A

Musculocutaneous (C5-C7)

55
Q

What are the origins of biceps?

A

Short head: coracoid process of scapula (tip)
Long head: supraglenoid tubercle of scapula

56
Q

what is the insertion of biceps?

A

Radial/Bicipital tuberosity and bicipital aponeurosis.

57
Q

What is the origin of brachialis?

A

distal 1/2 of anterior surface of humerus

58
Q

What is the insertion of brachialis?

A

coronoid process and ulnar tuberosity

59
Q

What are the origins of triceps?

A

Long head: infraglenoid tubercle of scapula
Lateral head: lateral and posterior surface of humerus, superior to radial groove.
Medial head: posterior surface of humerus inferior to radial groove

60
Q

what is the insertion of triceps?

A

Olecranon process of the ulna

61
Q

what enervates the triceps?

A

radial nerve (C5-T1)

62
Q

What enervates Brachialis?

A

Musculocutaneous (C5-C7)

63
Q

What is the origin of Anconeus?

A

Lateral epicondyle of humerus, posterior surface

64
Q

what is the insertion of Anconius?

A

Olecranon process and proximal shaft of ulna (posterior)

65
Q

what enervates Anconius?

A

Radial nerve (C5-T1)

MS 1 (9 decks)

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