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XXXMSK > Myology of the UE (Action/Innervation/Blood Supply) > Flashcards

Myology of the UE (Action/Innervation/Blood Supply) Flashcards

1
Q

What muscles comprise the “thoracoappendicular muscles”?

A

Pectoralis major muscles
Pectoralis minor muscle
Subclavius muscle
Serratus anterior muscle

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2
Q

What is the action (A), innervation (N), and blood supply (BS) of pectoralis major muscle?

A

Action: ADduct and medially rotate humerus; protracts and depressed scapula; clavicular head flexes humerus; sternocostal head extends humerus from the flexed state.

Innervation: lateral and medial pectoral nerves

Blood supply: pectoral branch of thoracoacromial trunk

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3
Q

A-N-BS of pectoralis major muscle?

A

A: stabilizes scapula by protracting and depressing it against the thoracic wall
N: medial pectoral nerve
BS: pectoral branch of thoracoacromial trunk

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4
Q

A-N-BS of subclavius muscle?

A

A: positions and depresses clavicle
N: nerve to subclavius muscle
BS: clavicular branch of thoracoacromial trunk

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5
Q

A-N-BS of serratus anterior muscle?

A

A: protracts scapula (stabilizing it against thoracic wall) and rotates glenoid cavity superiorly
N: long thoracic nerve
BS: lateral thoracic artery and thoracodorsal artery

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6
Q

What muscles comprise the “scapulohumeral muscles”?

A 
Deltoid muscle
Subscapularis muscle
Supraspinatus muscle
Infraspinatus muscle
Teres minor muscle
Teres major muscle
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7
Q

A-N-BS of deltoid muscle?

A

Action:
anterior part: flex and medially rotate humerus
middle part: aBduct humerus
posterior part: extend and laterally rotate the humerus

Innervation: axillary nerve
Blood supply: posterior circumflex humeral artery

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8
Q

A-N-BS of subscapularis muscle?

A

A: medially rotate and aDduct the humerus; holds humeral head in glenoid cavity
N: upper and lower subscapular nerve
BS: subscapular artery

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9
Q

A-N-BS of supraspinatus muscle?

A

A: with the deltoid muscle, aBduct the humerus; holds the humeral head in the glenoid cavity
N: suprascapular nerve
BS: suprascapular artery

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10
Q

A-N-BS of infraspinatus muscles?

A

A: laterally rotates the humerus; holds the humeral head in the glenoid cavity
N: suprascapular nerve
BS: suprascapular artery and circumflex scapular artery

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11
Q

A-N-BS of teres minor muscle?

A

A: laterally rotates the humerus; holds the humeral head in the glenoid cavity
N: axillary nerve
BS: circumflex scapular artery

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12
Q

A-N-BS of teres major muscle?

A

A: aDduct and medially rotate the humerus
N: lower subscapular nerve
BS: circumflex scapular artery

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13
Q

What muscles comprise the anterior compartment of the brachial muscles?

A

Biceps brachii muscles
Coracobrachialis muscle
Brachialis muscle.

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14
Q

A-N-BS of biceps brachii muscle?

A

A: flex humerus and the supine forearm; supinate the forearm; short head resists dislocation of the shoulder
N: musculocutaneous nerve
BS: brachial artery

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15
Q

A-N-BS of coracobrachialis muscle?

A

A: flex and aDduct the humerus
N: musculocutaneous nerve
BS: brachial artery

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16
Q

A-N-BS of brachialis muscle?

A

A: flex the forearm
N: musculocutaneous nerve
BS: radial recurrent artery

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17
Q

What muscles comprise the posterior compartment of the brachial muscles?

A

triceps brachii muscle and anconeus muscle

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18
Q

A-N-BS of triceps brachii muscle?

A

A: extend the forearm; long head resists dislocation of the shoulder
N: radial nerve
BS: deep brachial artery

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19
Q

A-N-BS of anconeus muscle?

A

A: with the triceps brachii muscles, extends the forearm; stabilizes the elbow joint
N: radial nerve
BS: deep brachial artery and interosseous recurrent artery

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20
Q

What muscles comprise the superficial layer of flexors of the antebrachial muscles?

A

Pronator teres muscle
Flexor carpi radialis muscle
Palmaris longus muscle
Flexor carpi ulnaris muscle

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21
Q

A-N-BS of pronator teres muscle?

A

A: pronate and flex the forearm
N: median nerve
BS: ulnar artery and radial artery

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22
Q

A-N-BS of flexor carpi radialis muscle?

A

A: flex forearm and wrist; aBduct hand at the wrist
N: median nerve
BS: ulnar artery

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23
Q

A-N-BS of palmaris longus muscle?

A

A: flex forearm and hand; tenses the palmar aponeurosis
N: median nerve
BS: ulnar artery

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24
Q

A-N-BS of flexor carpi ulnaris muscle?

A

A: flex forearm and hand at the wrist; aDduct hand at the wrist
N: ulnar nerve
BS: ulnar artery

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25
Q

What muscle comprises the intermediate layer of flexors of the antebrachial muscles?

A

flexor digitorum superficialis muscle

26
Q

A-N-BS of flexor digitorum superficialis muscles?

A

A: flex forearm, hand at the wrist, and proximal and intermediate phalanges of digits 2-5 at the metacarpophalangeal and proximal interphalangeal joints, respectively
N: median nerve
BS: ulnar artery

27
Q

What muscles comprise the deep layer of flexors of the antebrachial muscles?

A

Flexor digitorum profundus muscle
Flexor pollicis longus muscle
Pronator quadratus muscles

28
Q

A-N-BS of flexor digitorum profundus muscle?

A

Action: flex hand at the wrist and all phalanges of digits 2-5 at the metacarpophalangeal, proximal, and distal interphalangeal joints

Innervation:
lateral part: anterior interosseous nerve (of the median nerve)
medial part: ulnar nerve

BS: ulnar artery and anterior interosseous artery

29
Q

A-N-BS of flexor pollicis longus muscle?

A

A: flex hand; flex and aBduct 1st metacarpal at the 1st carpometacarpal joint; flex both phalanges of the pollux (thumb) at the intercarpal joint
N: anterior interosseous nerve (of the median nerve)
BS: anterior interosseous artery

30
Q

A-N-BS of pronator quadratus muscle?

A

A: pronate forearm; deep fibers hold the ulna and radius together
N: anterior interosseous nerve (of the median nerve)
BS: anterior interosseous artery

31
Q

What muscles comprise the superficial layer of extensors of the antebrachial muscles?

A 
Brachioradialis muscle
Extensor carpi radialis longus muscle
Extensor carpi radialis brevis muscle
Extensor digitorum muscle
Extensor digiti minimi muscle
Extensor carpi ulnaris muscles
32
Q

A-N-BS of brachioradialis muscle?

A

A: flex forearm (most force when forearm is midpronated)
N: radial nerve
BS: radial recurrent artery

33
Q

A-N-BS of extensor carpi radialis longus muscle?

A

A: extend and aBduct hand at the wrist (active during fist clenching)
N: radial nerve
BS: radial artery

34
Q

A-N-BS of extensor carpi radialis brevis muscle?

A

A: extend and aBduct hand at the wrist
N: deep radial nerve
BS: radial artery

35
Q

A-N-BS of extensor digitorum muscle?

A

A: extend hand at the wrist; extend all phalanges of digits 2-5 at the metacarpophalangeal, proximal, and distal interphalangeal joints
N: posterior interosseous nerve
BS: posterior interosseous artery

36
Q

A-N-BS of extensor digiti minimi muscle?

A

A: extend all phalanges of digit 5 at the metacarpophalangeal, proximal, and distal interphalangeal joints
N: posterior interosseous nerve
BS: posterior interosseous artery

37
Q

A-N-BS of extensor carpi ulnaris muscle?

A

A: extend and aDduct hand at the wrist (active during fist clenching)
N: posterior interosseous nerve
BS: ulnar artery

38
Q

What muscles comprise the deep extensors of the antebrachial muscles?

A

supinator muscle and extensor indicis muscle

39
Q

A-N-BS of supinator muscle?

A

A: supinate forearm
N: deep radial nerve
BS: radial recurrent artery

40
Q

A-N-BS of extensor indicis muscle?

A

A: extend hand at the wrist; extend 2nd digit
N: posterior interosseous nerve
BS: posterior interosseous artery

41
Q

What muscles comprise the outcropping muscles of the deep layer of extensors of the antebrachial muscles?

A

Abductor pollicis longus muscle
Extensor pollicis longus muscle
Extensor pollicis brevis muscle

42
Q

A-N-BS of abductor pollicis longus muscle?

A

A: aBduct hand at the wrist; aBduct the pollux (thumb) at the carpometacarpal joint
N: posterior interosseous nerve
BS: posterior interosseous artery

43
Q

A-N-BS of extensor pollicis longus muscle?

A

A: aBduct hand at the wrist; extend 1st metacarpal, proximal, and distal phalanges of the pollux (thumb) at the carpometacarpal, metacarpophalangeal, and interphalangeal joints
N: posterior interosseous nerve
BS: posterior interosseous artery

44
Q

A-N-BS of extensor pollicis brevis muscle?

A

A: aBduct hand, extend 1st metacarpal and proximal phalanges of the pollux (thumb) at the carpometacarpal and metacarpophalangeal joints
N: posterior interosseous nerve
BS: posterior interosseous artery

45
Q

What muscles comprise the thenar eminence of the hand muscles?

A

Abductor pollicis brevis muscle
Opponens pollicis muscles
Flexor pollicis brevis muscle
Adductor pollicis muscle

46
Q

A-N-BS of abductor pollicis brevis muscle?

A

A: aBduct pollux (thumb); aids in opposition
N: recurrent branch of median nerve
BS: superficial palmar branches of radial artery

47
Q

A-N-BS of opponens pollicis muscle?

A

A: oppose pollux (thumb)
N: recurrent branch of the median nerve
BS: superficial palmar branches of the radial artery

48
Q

A-N-BS of flexor pollicis brevis muscle?

A

Action: flex 1st metacarpal and proximal phalanges of the pollux (thumb) at the carpometacarpal and metacarpophalangeal joints

Innervation:
superficial head: recurrent branch of the median nerve
deep head: deep ulnar nerve

Blood supply: superficial palmar branches of the radial artery

49
Q

A-N-BS of adductor pollicis muscle?

A

A: aDduct pollux (thumb)
N: deep ulnar nerve
BS: deep palmar arterial arch

50
Q

What muscles comprise the hypothenar eminence of the hand muscles?

A

Abductor digiti minimi muscle
Flexor digiti minimi brevis muscle
Opponens digiti minimi muscle

51
Q

A-N-BS of abductor digiti minimi muscle?

A

A: aBduct 5th digit
N: deep ulnar nerve
BS: ulnar artery

52
Q

A-N-BS of flexor digiti minimi brevis muscle?

A

A: flex proximal phalanx of the 5th digit
N: deep ulnar nerve
BS: ulnar artery

53
Q

A-N-BS of opponens digiti minimi muscle?

A

A: oppose 5th digit
N: deep ulnar nerve
BS: ulnar artery

54
Q

What is the muscle that was unclassified on the hand?

A

palmaris brevis muscle

55
Q

A-N-BS of palmaris brevis muscle?

A

A: folds the skin of the ulnar side of the palm
N: superficial branch of the ulnar nerve
BS: superficial palmar branches of the ulnar artery

56
Q

What muscles comprise the intermediate muscles of the hand muscles?

A 
Lumbrical muscles (1-4)
Dorsal interossei muscles (1-4) - DAB
Palmar interossei muscles (1-3) - PAD
57
Q

A-N-BS of 1st and 2nd lumbrical muscles?

A

A: flex proximal phalanges of the 2nd and 3rd digits at the metacarpophalangeal joints; extend intermediate and distal phalanges of the 2nd and 3rd digits by tightening extensor expansion
N: median nerve
BS: superficial palmar arch; common palmar digital arteries; deep palmar arch; dorsal digital arteries

58
Q

A-N-BS of 3rd and 4th lumbrical muscles?

A

A: flex proximal phalanges of the 4th and 5th digits at the metacarpophalangeal joints; extend intermediate and distal phalanges of the 4th and 5th digits by tightening extensor expansion
N: deep ulnar nerve
BS: superficial palmar arch; common palmar digital arteries; deep palmar arch; dorsal digital arteries

59
Q

A-N-BS of dorsal interossei muscles (1-4) - DAB?

A

A: aBduct digits 2-4; flex proximal phalanges at the metacarpophalangeal joints; extend intermediate and distal phalanges by tightening extensor expansion
N: deep ulnar nerve
BS: dorsal and palmar metacarpal arteries

60
Q

A-N-BS of palmar interossei muscles (1-3) - PAD?

A

A: aDduct 2nd, 4th, and 5th digits; flex proximal phalanges of the 2nd, 4th, and 5th digits at the metacarpophalangeal joints; extend intermediate and distal phalanges of the 2nd, 4th, and 5th digits by tightening extensor expansion
N: deep ulnar nerve
BS: palmar metacarpal arteries

XXXMSK (15 decks)

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