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MSK > Muscles Of Upper Limb > Flashcards

Muscles Of Upper Limb Flashcards

0
Q

Pectoralis Major

A

Innervation: lateral and medial pectoral nerves
Actions: abduction, medial rotation, flexion and extension of humerus

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1
Q

Pectoralis Minor

A

I: medial pectoral nerve
A: draws scapula anteriorly and inferiority (stabilises scapula)

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2
Q

Subclavius

A

I: subclavian nerve C5, C6
A: anchors and depresses clavicle

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3
Q

Serrated Anterior

A

I: long thoracic C5, C6, C7
A: protracts and rotates scapula, abducts arm >90’

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4
Q

Trapezius: superior, middle, inferior

A

I: accessory nerve, C3 & C4 spinal nerves
A: superior elevates scapula, middle retracts scapula, inferior depresses scapula, superior and inferior rotate rotate glenoid cavity superiorly - elevating arm >90’

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5
Q

Lattisimus Dorsi

A

I: thoracodorsal nerve C6,7,8
A: extension, abducts and medially rotates humerus “climbers muscle”

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6
Q

Levator Scapulae

A

I: dorsal scapula C4,5 and cervical C3,4
A: elevates scapula, rotates scapula depressing the glenoid cavity

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7
Q

Rhomboids (major and minor)

A

I: dorsal scapula nerve C4,5
A: retracts scapula, rotates scapula depressing the glenoid cavity

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8
Q

Deltoid

A

I: axillary nerve C5,6
A: anterior part flexes arm, middle part abducts arm 15-90’, posterior part extends arm

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9
Q

Teres Major

A

I: lower subscapular nerve C5,6
A: adducts and medially rotates arm

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10
Q

Rotator cuff muscles

A

Supraspinatus: abducts arm , suprascapular nerve C5,6

Infraspinatus: lateral rotation of arm, suprascapular nerve

Teres Minor: lateral rotation of arm, weak adduction, axillary nerve C5,6

Subscapularis: medial rotation of arm, upper and lower subscapular nerves C5,6,7

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11
Q

Which muscle depresses scapula?

A

Inferior trapezius

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12
Q

Which muscles elevate scapula?

A

Superior trapezius, levator scapulae

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13
Q

Which muscles retract scapula?

A

Middle trapezius, rhomboid

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14
Q

Which muscle protracts scapula?

A

Serrated anterior

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15
Q

Which muscle causes upward rotation of scapula?

A

Superior and inferior trapezius

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16
Q

Which muscle causes downwards rotation of scapula?

A

Rhomboids

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17
Q

Flexion of SJ

A

Pectoralis Major,
anterior deltoid,
coracobrachialis,
biceps brachii

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18
Q

Extension of SJ

A

Posterior deltoid
Lattisimus Dorsi
Teres Major

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19
Q

Abduction of SJ

A

0-15’ supraspinatus
15-90’ middle deltoid
> 90’ trapezius and serratus anterior

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20
Q

Adduction of SJ

A

Pectoralis major
Lattisimus Dorsi
teres major

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21
Q

Medial rotation of SJ

A

Subscapular is
Teres major
Pec major
Lattisimus Dorsi

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22
Q

Lateral rotation of SJ

A

Infraspinatus

Teres minor

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23
Q

Name the extrinsic superficial muscles of the back

A

Trapezius

Lattisimus Dorsi

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24
Q

Name the deep muscles of the back

A

Levator scapulae

Rhomboids

25
Q

Name the scapulohumeral muscles of the back

A

Deltoid
Teres Major
Rotator cuff muscles - teres minor, supraspinatus, infraspinatus, subscapularis

26
Q

Biceps brachii

A

I: musculocutaneous nerve
A: flexion of arm, supination of forearm

27
Q

Brachialis

A

I: musculocutaneous
A: flexion of forearm

28
Q

Coracobrachialis

A

I: musculocutaneous
A: abduction of arm, flexion of arm at SJ

29
Q

Triceps brachii

A

I: radial nerve
A: extension of forearm

30
Q

Aconeus

A

I: radial nerve
A: extension of forearm

31
Q

Name posterior muscles of arm

A

Triceps brachii

Aconeus

32
Q

Name anterior muscles of arm

A

Biceps brachii
Brachialis
Coracobrachialis

33
Q

Pronator Teres

A

I: median nerve
A: pronates and flexes forearm

34
Q

Flexor carpi radialis

A

I: median nerve
A: flexes and abducts hand

35
Q

Palmaris longis

A

I:median nerve
A: flexes hand

36
Q

Flexor carpi ulnaris

A

I: ulna nerve
A: flexes and adducts hand

37
Q

Flexor digits rum superficialis

A

I: median nerve
A: flexes digits

38
Q

Flexor digitorum profundus

A

I: ulnar nerve
A: flexes distal phalanges

39
Q

Flexor pollicis longis

A

I: median nerve
A: flexes thumb

40
Q

Pronator quadratus

A

I: median nerve
A: pronates forearm

41
Q

Brachioradialis

A

I: radial nerve
A: flexion of forearm in mid-pronated position

42
Q

Extensor carpi radialis longus

A

I: radial nerve
A: extend and abducts hand

43
Q

Extensor carpi radialis brevis

A

I: radial nerve (deep branch)
A: extends and abducts hand

44
Q

Extensor digitorum

A

I: radial nerve (deep branch)
A: extends medial 4 digits

45
Q

Extensor digiti minimi

A

I: radial nerve
A: extends 5th digit

46
Q

Supinator

A

I: radial nerve (deep branch)
A: supinates forearm

47
Q

Extensor carpi ulnaris

A

I: radial nerve (deep branch)
A: extends and adducts hand

48
Q

Extensor indices

A

I: radial nerve (posterior interosseous nerve branch from deep radial nerve)
A: extends 2nd digit

49
Q

Abductor pollicis longus

A

I: radial nerve (posterior interosseous branch)
A:abducts and extends thumb

50
Q

Extensor pollicis longus

A

I: radial nerve (posterior interosseous branch)
A: extends thumb

51
Q

Extensor pollicis brevis

A

I: radial nerve (posterior interosseous branch)
A: extends thumb

52
Q

Name the superficial anterior muscles of forearm

A

Pronator Teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

53
Q

Name the intermediate muscles of anterior forearm

A

Flexor digitorum superficialis

54
Q

Name the deep muscles of anterior forearm

A

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

55
Q

Name the superficial muscles of the posterior forearm

A 
Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum 
Extensor digiti minimi
Extensor carpi ulnaris
56
Q

Name the deep muscles of the posterior forearm

A 
Supinator 
Extensor indices
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
57
Q

Which muscles of the forearm are innervated by the ulnar nerve

A

Flexor carpi ulnaris

Medial side of flexor digitorum profundus

58
Q

Which nerve innervates the majority of anterior forearm

A

Median nerve

59
Q

Which nerve innervates the posterior forearm

A

Radial nerve

MSK (8 decks)

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