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1
Q

Trapezius

A
  1. elevates the scapula
  2. upwardly rotates the scapula
  3. downwardly rotates the scapula
  4. retracts scapula
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2
Q

Latissimus dorsi

A
  1. extends the arm (from a flexed position)
  2. internally (medially) rotates the arm
  3. adducts the arm
  4. downwardly rotates the scapula
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3
Q

Levator Scapulae

A
  1. elevates the scapula
  2. extends and/or laterally flexes the neck
  3. assists to downwardly rotate the scapula
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4
Q

Rhomboid minor

A
  1. retracts the scapula
  2. assists to downwardly rotate the scapula
  3. eccentrically helps to control rate of scapular upward rotation during arm elevation.
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5
Q

Rhomboid major

A
  1. retracts the scapula
  2. assists to downwardly rotate the scapula
  3. eccentrically helps to control rate of scapular upward rotation during arm elevation.
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6
Q

Serratus anterior

A
  1. protracts the scapula
  2. assists to upwardly rotate the scapula
  3. Functionally prevents winging
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7
Q

deltoid

A
  1. anterior portion: flexes and internally rotates the arm
  2. middle portion: abducts the arm
  3. posterior portion: extends and externally (laterally) rotates the arm
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8
Q

supraspinatus

A
  1. abducts the arm (almost solely for first 20 degrees)

2. helps guide humeral head into central glenoid with elevation of shoulder

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9
Q

infraspinatus

A
  1. externally rotates the arm

2. helps produce inferior translation and compression into glenoid (along with the other rotator cuff muscles)

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10
Q

teres minor

A
  1. externally rotates the arm

2. helps produce inferior translation and compression into glenoid (along with the other rotator cuff muscles)

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11
Q

teres major

A
  1. internally rotates the arm
  2. extends the arm (from a flexed position)
  3. adducts the arm
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12
Q

subscapularis

A
  1. internally rotates the arm
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13
Q

subclavius

A

Depression of clavicle

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14
Q

pectoralis major

A
  1. adducts the arm
  2. internally rotates the arm
  3. horizontal Adduction of arm
  4. flexes the shoulder (from an extended position)
  5. depresses the arm & shoulder
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15
Q

pectoralis minor

A
  1. depresses the scapula

2. downwardly rotates the scapula

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16
Q

coracobrachialis

A
  1. flexes the shoulder

2. assists to adduct the humerus

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17
Q

Biceps brachii

A
  1. flexes the elbow (when supinated)
  2. supinates the forearm from neutral
  3. flexes shoulder (when palm facing up)
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18
Q

brachialis

A

flexes the elbow

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19
Q

triceps brachii

A
  1. long head: extends the elbow, adducts the arm, may assist in shoulder extension from a flexed position
  2. lateral head: elbow extension
  3. medial head: elbow extension
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20
Q

anconeus

A
  1. elbow extension

2. supports the elbow when in full extension

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21
Q

pronator teres

A
  1. pronates forearm

2. weakly flexes the elbow

22
Q

flexor carpi radialis

A
  1. flexes the wrist
  2. radially deviates the wrist
  3. may assist to pronate the forearm
23
Q

palmaris longus

A

flexes the hand at the wrist

24
Q

flexor carpi ulnaris

A
  1. flexes the wrist
  2. ulnarly deviates the wrist
  3. stabilizes the wrist to permit powerful thumb motion
25
Q

flexor digitorum superficialis

A
  1. flexes the proximal and middle IP joints

2. flexes the wrist if fingers are extended

26
Q

flexor digitorum profundus

A
  1. flexes the distal IP joints and in so doing flexes the proximal and middle IP joints
  2. flexes the wrist if fingers are extended
27
Q

flexor pollicis longus

A
  1. flexes the distal phalanx of thumb

2. flexes the other joints to the wrist (McP, CMC)

28
Q

pronator quadratus

A

pronates the forearm and hand

29
Q

brachioradialis

A
  1. flexes the elbow
  2. pronates the forearm when supinated
  3. supinates the forearm when pronated
30
Q

extensor carpi radialis longus

A
  1. extends the wrist
  2. radially deviates the wrist
  3. weakly flexes the elbow
  4. weakly supinates the forearm
31
Q

extensor carpi radialis brevis

A
  1. extends the wrist

2. radially deviates the wrist

32
Q

extensor carpi ulnaris

A
  1. extends the wrist

2. ulnarly deviates the wrist

33
Q

extensor digitorum

A
  1. extends the four medial digits
  2. extends the wrist (if fingers are flexed)
  3. abducts the digits (during extension)
34
Q

extensor digit minimi

A
  1. extends the 5th digit

2. abducts the 5th digit

35
Q

extensor indicis

A
  1. extends the 2nd digit
  2. adducts the 2nd digit
  3. assists to extend the wrist
  4. stabilizes McP joint for flexion of IP solely
36
Q

supinator

A
  1. supinates the forearm
37
Q

extensor pollicis longus

A
  1. extends distal phalanx of thumb
  2. extends proximal phalanx of thumb
  3. assists to extend the wrist (if fingers are flexed)
38
Q

extensor pollicis brevis

A
  1. extends the proximal phalanx and 1st metacarpal of the thumb
  2. radially deviates the wrist
39
Q

abductor pollicis longus

A
  1. abducts the 1st metacarpal
  2. assists to extend & rotate the thumb
  3. radially deviates the wrist
  4. flexes the wrist
40
Q

abductor digiti minimi

A
  1. abducts the 5th digit

2. assists to flex the 5th digit

41
Q

flexor digiti minimi brevis

A

flexes the 5th digit

42
Q

opponens digiti minimi

A
  1. opposes 5th digit with the thumb

2. assists to “cup the palm”

43
Q

palmar interossei (4)

A
  1. adducts the fingers

2. flexes fingers (at the McP while IP joints are extended)

44
Q

dorsal interossei (4)

A
  1. abducts the fingers

2. flexes fingers (at the McP while IP joints are extended)

45
Q

lumbricals (4)

A
  1. flexes the fingers (IP joints)

2. extends IP’s

46
Q

abductor pollicis brevis

A
  1. abducts thumb
  2. participates to flex the thumb
  3. if attached to extensor pollicis longus, it might assist to extend the thumb
47
Q

flexor pollicis brevis

A

flexes the thumb

48
Q

opponens pollicis

A

opposes the thumb to the fingers

49
Q

adductor pollicis

A

adducts the thumb

50
Q

palmaris brevis

A

tenses the skin on the ulnar side of the palm

anatomy (10 decks)

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