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MSK > UL Muscles > Flashcards

UL Muscles Flashcards

1
Q

Sternocleidomastoid

A

O: manubrium and medial clavicle
I: mastoid process & lateral superior nuchal line
INN: CN XI (motor spinal part)
A: moves head and neck

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2
Q

Upper trapezius

A

O: medial superior nuchal line & external occipital protuberance
I: lateral clavicle
INN: CN XI (motor spinal part)
A: clavicular elevation; scapular elev, ADD, upward rot’n

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3
Q

Middle trapezius

A

O: ligamentum nuchae & C7-T12 spinous processes
I: acromion process & spine of scapula
INN: CN XI (motor spinal part)
A: scapular retraction/ADD

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4
Q

Lower Trapezius

A

O: ligamentum nuchae & C7-T12 spinous processes
I: medial spine of scapula
INN: CN XI (motor spinal part)
A: scapular depression & upward rotation

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5
Q

Subclavius

A

O: 1st rib
I: inferior middle 1/3 clavicle
INN: nerve to subclavius (C5-6)
A: pulls clavicle medially to stabilise SC joint

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6
Q

Levator scapulae

A

O: C1-4 transverse processes
I: medial border scapula above medial spine of scapula
INN: C3,4 ventral rami + dorsal scapular (C5)
A: scapular elevation, adduction & downward rotation

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7
Q

Rhomboid minor

A

O: ligamentum nuchae, C7 & T1
I: medial border scapula medial spine of scapula
INN: dorsal scapular (C5)
A: scapular elevation, adduction & downward rotation

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8
Q

Rhomboid major

A

O: T2-5 spinous processes
I: medial border scapula below medial spine of scapula
INN: dorsal scapular (C5)
A: scapular elevation, adduction & downward rotation

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9
Q

Serratus anterior

A 
O: anterolateral ribs 1 to 10
I: medial, ventral border of scapula
INN: long thoracic (C5-7)
A: scapular protraction/ABD,
upward rot’n, scapular elevation
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10
Q

Pectoralis minor

A

O: anterior ribs 3-5
I: corocoid process
INN: medial and lateral pectoral nerves (C6-T1)
A: scapular anterior tilt

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11
Q

Pectoralis major (sternocostal head)

A

O: sternum & 1st to 7th costal cartilages
I: lateral lip intertubercular sulcus of humerus
INN: medial & lateral pectoral nerves (C7-T1)
A: Ext, medial rotation

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12
Q

Latissimus dorsi

A

O: T7-12, lumbar & sacral spinous processes, posterior iliac crest & lower 3 ribs
I: intertubercular sulcus, inferior angle of scapula
INN: thoracodorsal (C6-8)
A: Ex, ADD, medial rot’n

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13
Q

Pectoralis major (clavicular head)

A

O: medial 2/3 clavicle
I: lateral lip intertubercular sulcus of humerus
INN: medial & lateral pectoral nerves (C5-6)
A: Fx, medial rotation

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14
Q

Deltoid

A 
O: A = lateral 1/3 clavicle
M = acromion process
P = spine of scapula
I: deltoid tuberosity
INN: axillary (C5,6)
A: A = Fx
M =ABD
P = Ex
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15
Q

Supraspinatus

A

O: supraspinous fossa of scapula
I: greater tubercle of humerus
INN: suprascapular (C5,6)
A: GHJ ABD & stabilisation

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16
Q

Infraspinatus

A

O: infraspinous fossa of scapula
I: greater tubercle of humerus
INN: suprascapular (C5,6)
A: GHJ lateral rotation & stabilisation

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17
Q

Teres minor

A

O: lateral dorsal scapula
I: greater tubercle of humerus
INN: axillary (C5,6)
A: GHJ lateral rot’n & stabilisation

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18
Q

Subscapularis

A

O: subscapular fossa
I: lesser tubercle of humerus
INN: upper & lower subscapular (C5-6)
A: GHJ medial rotation & stabilisation

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19
Q

Teres major

A

O: dorsal inferior angle of scapula
I: medial lip intertubercular sulcus of humerus
INN: lower subscapular (C5-6)
A: GHJ medial rot’n, ADD, Ex

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20
Q

Coracobrachialis

A

O: coracoid process
I: medial midshaft humerus
INN: musculocutaneous (C5-7)
A: GHJ Fx, ADD

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21
Q

Biceps brachii long head

A

O: supraglenoid tubercle of scapula
I: radial tuberosity and bicipital aponeurosis
INN: musculocutaneous (C5-6)
A: GHJ Fx, elbow Fx, supination

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22
Q

Biceps brachii short head

A

O: coracoid process of scapula
I: radial tuberosity and bicipital aponeurosis
INN: musculocutaneous (C5-6)
A: elbow Fx, supination

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23
Q

Brachialis

A

O: distal anterior humerus
I: tuberosity and coronoid process of ulnar
INN: musculocutaneous (C5-6)
A: elbow Fx

24
Q

Triceps brachii long head

A

O: infraglenoid tubercle of scapula
I: olecranon of ulna
INN: radial (C5-7)
A: GHJ Ex, ADD, elbow Ex

25
Q

Triceps brachii lateral head

A

O: pos. humerus above radial groove
I: olecranon of ulna
INN: radial (C5-7)
A: elbow Ex

26
Q

Triceps brachii medial head

A

O: pos humerus below radial groove
I: olecranon of ulna
INN: radial (C5-7)
A: elbow Ex

27
Q

Anconeus

A

O: lateral epicondyle of humerus
I: olecranon of ulna
INN: radial (c6-8)
A: elbow Ex

28
Q

Pronator teres

A

O: medial epicondyle of humerus, coronoid process of ulna
I: midshaft radius
INN: median (C6-7)
A: pronation

29
Q

Flexor carpi radialis

A

O: medial epicondyle of humerus
I: base of MC II + III
INN: median (C6-7)
A: wrist Fx, ABD

30
Q

Palmaris longus

A

O: medial epicondyle of humerus
I: flexor retinaculum and palmar aponeurosis
INN: median (C6-7)
A: weak wrist flexor

31
Q

Flexor carpi ulnaris

A

O: medial epicondyle of humerus, proximal 2/3 ulna
I: pisiform, hamate, base of MC V
INN: ulnar (C8-T1)
A: wrist Fx, ADD

32
Q

Pronator quadratus

A

O: distal ulna
I: distal radius
INN: median (C8-T1)
A: pronation

33
Q

Flexor digitorum superficialis

A

O: medial epicondyle of humerus, coronoid process of ulna
I: mid phalanges 2-5
INN: median (C6-7)
A: wrist, MP/PIP 2-5 Fx

34
Q

Flexor digitorum profundus

A

O: anteromedial ulna, interosseous membrane
I: distal phalanges 2-5
INN: lateral - median (C6-8), medial - ulnar (C8)
A: wrist, MP/PIP/DIP 2-5 Fx

35
Q

Flexor pollicis longus

A

O: anterior radius, interosseous membrane
I: distal phalanx 1
INN: median (C6-7)
A: MP/IP 1 Fx, weak wrist Fx

36
Q

Brachioradialis

A

O: lateral supracondylar ridge of humerus
I: styloid process of radius
INN: radial (C5-6)
A: elbow Fx

37
Q

Extensor carpi radialis longus

A

O: lateral supracondylar ridge and lateral epicondyle of humerus
I: dorsal base of MC II
INN: radial (C6-7)
A: wrist Ex, ABD

38
Q

Extensor carpi radialis brevis

A

O: lateral epicondyle of humerus
I: dorsal surface of MC III
INN: radial (C7-8)
A: wrist Ex, ABD

39
Q

Supinator

A

O: lateral epicondyle of humerus and ulna distal to radial notch
I: anterolateral radius distal to radial tuberosity
INN: radial (C6-8)
A: supination

40
Q

Extensor digitorum

A

O: lateral epicondyle of humerus
I: distal and middle phalanges 2-5
INN: radial (C6-8)
A: wrist, MP/PIP/DIP 2-5 Ex

41
Q

Extensor digiti minimi

A

O: lateral epicondyle of humerus
I: proximal phalanx 5
INN: radial (C6-8)
A: wrist, MP/PIP 5 Fx

42
Q

Abductor pollicis longus

A

O: proximal radius and ulna, interosseous membrane
I: lateral edge of MC I
INN: radial (C6-8)
A: thumb ABD, wrist Ex

43
Q

Extensor carpi ulnaris

A

O: lateral epicondyle of humerus
I: base of MC V
INN: deep radial (C7-8)
A: wrist Ex, ADD

44
Q

Extensor pollicis brevis

A

O: pos. radius, interosseous membrane
I: proximal phalanx 1
INN: deep radial (C7-8)
A: MP 1 Ex, weak wrist Ex

45
Q

Extensor pollicis longus

A

O: pos. ulna, interosseous membrane
I: distal phalanx 1
INN: deep radial (C7-8)
A: MP/IP 1 Ex, weak wrist Ex

46
Q

Extensor indicis

A

O: pos. ulna, interosseous membrane
I: tendon of extensor digitorum
INN: deep radial (C7-8)
A: MP/PIP/DIP 2 Ex, weak wrist Ex

47
Q

Abductor pollicis brevis

A

O: flexor retinaculum, scaphoid, trapezium
I: lateral proximal phalanx 1
INN: median (C8-T1)
A: thumb ABD

48
Q

Flexor pollicis brevis

A

O: flexor retinaculum, trapezium
I: proximal phalanx 1
INN: median (C8-T1)
A: thumb Fx

49
Q

Opponens pollicis

A

O: flexor retinaculum, trapezium
I: lateral MC I
INN: median (C8-T1)
A: thumb opposition

50
Q

Abductor digiti minimi

A

O: pisiform, FCU tendon
I: proximal phalanx 5
INN: ulnar (C8-T1)
A: digit 5 ABD

51
Q

Flexor digiti minimi

A

O: hamate, flexor retinaculum
I: proximal phalanx 5
INN: ulnar (C8-T1)
A: digit 5 Fx

52
Q

Opponens digiti minimi

A

O: hamate, flexor retinaculum
I: MC V
INN: ulnar (C8-T1)
A: digit 5 opposition

53
Q

Palmaris brevis

A

O: palmar aponeurosis, flexor retinaculum
I: dermis
INN: ulnar (C8-T1)
A: improves grip

54
Q

Adductor pollicis

A

O: MC II + III, capitate,
I: base of proximal phalanx 1 and ext. hood
INN: ulnar (C8-T1)
A: thumb ADD

55
Q

Palmar interossei

A

O: metacarpal
I: extensor expansion
INN: ulnar (C8-T1)
A: digit 2-5 ADD, MP 2-5 Fx, PIP/DIP 2-5 Ex

56
Q

Dorsal interossei

A

O: adjacent metacarpals
I: extensor expansion
INN: ulnar (C8-T1)
A: digit 2-5 ABD, MP 2-5 Fx, PIP/DIP 2-5 Ex

57
Q

Lumbricales

A

O: tendons of FDP
I: radial side of extensor expansion
INN: ulnar (C8-T1)
A: MP 2-5 Fx, PIP/DIP 2-5 Ex

MSK (11 decks)

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