THE BACK AND UPPER LIMB MUSCLES Flashcards

1
Q

Name the muscle

A

Deltiod

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2
Q
A

Deltiod

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3
Q
A

Deltoid

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4
Q

nerve supply of the deltoid?

A

axillary nerve

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5
Q

axillary nerve

A

nerve supply of the deltoid?

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6
Q

Proximal attachment of the deltoid

A
  • lateral ⅓ clavicle
  • acromion
  • spine of the scapula
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7
Q
  • lateral ⅓ clavicle
  • acromion
  • spine of the scapula
A

Proximal attachment of the deltoid

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8
Q

Distal attachment of the deltoid:

A

deltoid tuberosity of the humerus

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9
Q

deltoid tuberosity of the humerus

A

Distal attachment of deltoid

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10
Q

actions of the deltoid muscle?

A

flexes/rotation/ abducts the arm

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11
Q
A

Teres major and minor

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12
Q
A

Teres major

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13
Q

Nerve supply of teres major

A

lower subscapularis nerve

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14
Q

lower subscapularis nerve

A

nerve supply of teres major

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15
Q

The proximal attachment of teres major:

A

posterior surface and inferior corner of the scapula

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16
Q

posterior surface and inferior corner of the scapula

A

Proximal attachment of teres major:

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17
Q

Distal attachment of teres major:

A

medial lip of the intertubercular groove of the humerus

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18
Q

the medial lip of the intertubercular groove of the humerus

A

Distal attachment of teres major

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19
Q

Action of teres major:

A

adduction and medial rotation of the arm

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20
Q

Rotator cuff muscles

A

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

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21
Q
A

supraspinatus

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22
Q
A

supraspinatus

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23
Q

Nerve to the supraspinatus:

A

suprascapular nerve

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24
Q

Distal attachment of supraspinatus:

A

superior facet of the greater tubercle of the humerus

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25
Q

The proximal attachment of supraspinatus:

A

supraspinous fossa

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26
Q

The main action of the supraspinatus:

A

helps deltoid in abduction of the arm and

acts with the rotator cuff

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27
Q
A

infraspinatus

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28
Q

Nerve to the infraspinatus

A

suprascapular nerve

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29
Q

Proximal attachment of the infraspinatus:

A

infraspinous fossa

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30
Q

Distal attachment of the infraspinatus

A

middle facet of the greater tubercle of the humerus

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31
Q

Main action of the infraspinatus:

A
  • lateral rotation

- helps keep the humerus head in the glenoid cavity

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32
Q
A

teres minor

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33
Q
A

teres minor

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34
Q

Nerve to the teres minor :

A

axillary nerve

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35
Q

Proximal attachment of the teres minor:

A

middle part of the lateral border of the scapula

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36
Q

Distal attachment of the teres minor:

A

inferior facet of the greater tubercle of the humerus

37
Q

Main action of the teres minor:

A

lateral rotation

helps keep the humerus head in the glenoid cavity

38
Q
A

subscapularis

39
Q

Nerve to the subscapularis:

A

upper + lower subscapularis nerve

40
Q

Proximal attachment of the subscapularis :

A

subscapular fossa

41
Q

Distal attachment of the subscapularis:

A

lesser tubercle of the humerus

42
Q

Main action of the subscapularis:

A
  • medial rotation and abduction of the arm

- helps with keeping the humerus head in the glenoid cavity

43
Q
A

Biceps brachii

44
Q

Biceps brachii

A

This muscle has 2x heads = short and long head
There is no attachment on the humerus
It spans over 3x joints

45
Q

Nerve to the Biceps brachii muscle:

A

musculocutaneus nerve

46
Q

Proximal attachment of the Biceps brachii

A

Short head: coracoid process

Long head: supraglenoid tubercle

47
Q

Distal attachment of the Biceps brachii

A

Tuberosity [on the radius] and bicipital aponeuroses

48
Q

the action of the Biceps brachii

A

Supination/ flexion of the forearm

49
Q
A

Brachialis

50
Q

Nerve supply to the Brachialis

A

musculocutaneus nerve

51
Q

Proximal attachment of the Brachialis

A

Distal ½ of the anterior surface of the humerus

52
Q

Distal attachment of the Brachialis

A

Coronoid process/

Tuberosity on the ulna

53
Q

The action of the Brachialis

A

Flexion of the forearm

54
Q
A

coracobrachialis

55
Q
A

coracobrachialis

56
Q

Proximal attachment of the coracobrachialis

A

Coracoid process-scapula

57
Q

Distal attachment of the coracobrachialis

A

Middle 1/3 medial surface humerus

58
Q

Nerve to the muscle coracobrachialis :

A

Musculocutaneus nerve

59
Q

Action of the coracobrachialis

A

Flexion/adduction of the forearm

60
Q
A

triceps brachii

61
Q

Nerve to the triceps brachii

A

radialis nerve

62
Q

Proximal attachment of the triceps brachii

A

Long head: infraglenoid tubercle
[of the scapula]

Lateral head: posterior surface of the humerus [superior to the radial groove]

Medial head: posterior surface of the humerus [inferior to the radial groove]

63
Q

Distal attachment of the triceps brachii

A

Proximal part of the olecranon

[ulna and fascia forearm]

64
Q

Action of the triceps brachii

A

Extension/abduction of the forearm

65
Q
A

anconeus

66
Q

Nerve to the anconeus

A

radialis nerve

67
Q

Proximal attachment of the anconeus

A

Lateral epicondyle [of the humerus]

68
Q

Distal attachment of the anconeus

A

The lateral surface of the olecranon/

the superior part of the posterior surface of the ulna

69
Q

Action of the anconeus

A

Extension/stability in abduction of the elbow joint

70
Q
A

Pectorals major

71
Q

Nerve to the Pectorals major:

A

Medial pectoral and lateral pectoral nerve

72
Q

Proximal attachment of the Pectorals major

A

Anterior surface of the medial ½ of clavicle /
anterior surface of the sternum /
super 6 costal cartilages /
aponeuroses of external oblique m

73
Q

Distal attachment of the Pectorals major:

A

Lateral lip of the bicipital groove of the humerus

74
Q

The action of the Pectorals major:

A

Adducts and medially rotates the humerus/ draws scapula anterior and inferior / acting alone it flexes the humerus

75
Q
A

Pectoralis minor

76
Q

Nerve to the Pectoralis minor:

A

Medial pectoral nerve

77
Q

Proximal attachment of the Pectoralis minor:

A

3-5 ribs near costal cartilages

78
Q

Distal attachment of the Pectoralis minor

A

Medial border and superior surface of the coracoid process of the scapula

79
Q

Action of the Pectoralis minor:

A

Stabilizes scapula by drawing it inferior and anterior against the thoracic wall

80
Q
A

Subclavius

81
Q

Nerve to the Subclavius:

A

subclavian nerve (C5-6)

82
Q

Proximal attachment of the Subclavius

A

Junction of the 1st rib and its costal cartilage

83
Q

Distal attachment of the Subclavius:

A

Inf surface of middle 1/3 of clavicle

84
Q

Action of the Subclavius:

A

Anchors and depresses clavicle

85
Q
A

Serratus anterior

86
Q

Nerve to the Serratus anterior

A

Long thoracic nerve

87
Q

The proximal attachment of the Serratus anterior

A

external surfaces of the lateral parts of the 1-8 ribs

88
Q

Distal attachment of the Serratus anterior:

A

Anterior surface of the medial border of the scapula

89
Q

Action of the Serratus anterior

A

Protracts the scapula and holds it against the thoracic wall /
Rotates the scapula