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Anatomy > Upper extremity muscles > Flashcards

Upper extremity muscles Flashcards

1
Q

Pectoralis minor

A

Actions: protracts and depresses shoulder

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2
Q

Serratus anterior

A

Actions: protraction, superior rotations, and stabilization of scapula

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3
Q

Subclavius

A

Actions: depresses and stabilizes scapula

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4
Q

Levator scapulae

A

Actions: elevates and inferiorly rotates scapula

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5
Q

Rhomboid major

A

Actions: elevates, retracts and inferiorly rotates scapula

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6
Q

Rhomboid minor

A

Actions: elevates, retracts and inferiorly rotates scapula

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7
Q

Trapezius

A

Actions:
Superior fibers - elevates and superiorly rotates scapula
Inferior fibers - depress scapula

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8
Q

Latissimus dorsi

A

Actions: extends, adducts and medially rotates arm

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9
Q

Pectoralis major

A

Actions: flexes, adducts and medially rotates arm

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10
Q

Deltoid

A

Actions:
Anterior fibers - flexes and medially rotates arm
Middle fibers - abducts arm
Posterior fibers - extends and laterally rotates arm

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11
Q

Coracobrachialis

A

Actions: adducts and flexes arm

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12
Q

Triceps brachii (long head)

A

Actions: extends and adducts arm

Proximal attachment: infraglenoid tubercle of scapula
Distal attachment: Olecranon of ulna

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13
Q

Biceps brachii (long head)

A

Actions: flexes arm

Proximal attachment: supraglenoid tubercle of scapula
Distal attachment: radial tuberosity

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14
Q

Rotator cuff muscles (SITS)

A

Actions collectively: stabilize glenohumeral joint

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15
Q

Subscapularis

A

Actions: medially rotates arm

Proximal attachment: subscapular fossa of scapula
Distal attachment: lesser tubercle of humerus

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16
Q

Supraspinatus

A

Actions: abducts arm

Proximal attachment: supraspinous fossa of scapula
Distal attachment: greater tubercle of humerus

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17
Q

Infraspinatus

A

Actions: adducts and laterally rotates arm

Proximal attachment: infraspinous fossa of scapula
Distal attachment: greater tubercle of humerus

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18
Q

Teres minor

A

Actions: adducts and laterally rotates arm

Proximal attachment: upper dorsal lateral border of scapula
Distal attachment: greater tubercle of humerus

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19
Q

Biceps brachii (short head)

A

Actions: flexes and supinates arm

Proximal attachment: coracoid process
Distal attachment: radial tuberosity

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20
Q

Brachialis

A

Actions: flexes forearm

21
Q

Brachioradialis

A

Actions: flexes forearm

22
Q

Triceps brachii (lateral head)

A

Actions: extends arm

Proximal attachment: posterior humerus above radial groove
Distal attachment: olecranon of ulna

23
Q

Triceps brachii (medial head)

A

Actions: extends arm

Proximal attachments: posterior humerus below radial groove
Distal attachment: olecranon of ulna

24
Q

Anconeus

A

Actions: extends forearm

25
Q

Pronator quadratus

A

Actions: pronates forearm

26
Q

Pronator teres

A

Actions: pronates forearm

27
Q

Supinator

A

Actions: supinates forearm

28
Q

Flexor carpi radialis

A

Actions: flexes wrist and abducts hand

29
Q

Palmaris longus

A

Actions: flexes wrist (weak)

30
Q

Flexor carpi ulnaris

A

Actions: flexes wrist and adduct hand

31
Q

Flexor digitorum superficialis

A

Actions: flexes wrist, 2nd-5th MP joints, PIP joints

32
Q

Flexor pollicis longus

A

Actions: flexes MP joint of thumb, IP joint of thumb, flexes wrist (weak)

33
Q

Flexor digitorum profundus

A

Actions: flexes wrist, 2nd-5th MP joints, PIP joints, DIP joints

34
Q

Extensor carpi radialis longus

A

Actions: extends wrist, abducts hand

35
Q

Extensor carpi radialis brevis

A

Actions: extends wrist, abducts hand

36
Q

Extensor digitorum

A

Actions: extends wrist, extends 2nd-5th MP joints, PIP joints, and DIP joints

37
Q

Extensor digiti minimi

A

Actions: extends wrist, MP, and PIP joints of 5th digit

38
Q

Extensor carpi ulnaris

A

Actions: extends wrist, adducts hand

39
Q

Abductor pollicis longus

A

Actions: abducts thumb, extends wrist (weak)

40
Q

Extensor pollicis brevis

A

Actions: extends MP joints of thumb, extends wrist (weak)

41
Q

Extensor pollicis longus

A

Actions: extends MP and IP joints of thumb, extends wrist (weak)

42
Q

Extensor indicis

A

Actions: extends MP, PIP, DIP joints of finger 2, extends wrist (weak)

43
Q

Flexor pollicis brevis

A

Actions: flexes thumb

44
Q

Abductor pollicis brevis

A

Actions: abducts thumb

45
Q

Opponens pollicis

A

Actions: Opposition of thumb

46
Q

Adductor pollicis

A

Actions: adducts thumb

47
Q

Flexor digiti minimi brevis

A

Actions: flexes 5th digit

48
Q

Abductor digiti minimi

A

Actions: abducts 5th digit

49
Q

Opponens digiti minimi

A

Opposition of 5th digit

Anatomy (13 decks)

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