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ACMT > Muscle Actions > Flashcards

Muscle Actions Flashcards

1
Q

which muscles flex the shoulder?

A

deltoid (anterior fibers)
biceps brachii
pectoralis major (upper fibers)

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2
Q

which muscles extend the shoulder?

A

teres major
deltoid (posterior fibers)
latissimus dorsi
triceps brachii (long head)
pectoralis major (lower fibers)

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3
Q

which muscles abduct the shoulder?

A

supraspinatus
deltoid (all fibers)

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4
Q

which muscles adduct the shoulder?

A

teres major
infraspinatus
teres minor
latissimus dorsi
triceps brachii (long head)
pectoralis major (all fibers)

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5
Q

which muscles horizontally abduct the shoulder?

A

deltoid (posterior fibers)

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6
Q

which muscles horizontally adduct the shoulder?

A

deltoid (anterior fibers)
pectoralis major (upper fibers)

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7
Q

which muscles medially rotate the shoulder?

A

teres major
subscapularis
deltoid (anterior fibers)
latissimus dorsi
pectoralis major (all fibers)

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8
Q

which muscles stabilize the head of the humerus in the glenoid cavity?

A

supraspinatus
infraspinatus
teres minor
subscapularis

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9
Q

which muscles laterally rotate the shoulder?

A

infraspinatus
teres minor
deltoid (posterior fibers)

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10
Q

which muscles flex the hip?

A

rectus femoris
TFL
anterior fibers of glute med
iliopsoas (with origin fixed)

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11
Q

which muscles extend the hip?

A

biceps femoris (long head)
semimembranosus
semitendinosus
glute max (all fibers)
glute med (posterior fibers)

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12
Q

which muscles abduct the hip?

A

TFL
glute max (all fibers)
glute med (all fibers)

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13
Q

which muscles adduct the hip?

A

glute max (lower fibers)
adductor longus

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14
Q

which muscles medially rotate the hip?

A

TFL
glute med (anterior fibers)
adductor longus

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15
Q

which muscles laterally rotate the hip?

A

glute max (all fibers)
glute med (posterior fibers)

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16
Q

which muscles flex the knee?

A

gastrocnmeius
semimembranosus
semitendinosus
biceps femoris

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17
Q

which muscles extend the knee?

A

rectus femoris
vastus group (lateralis, medialis, intermedius)

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18
Q

which muscles medially rotate the flexed knee?

A

semimembranosus
semitendinosus

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19
Q

which muscles laterally rotate the flexed knee?

A

biceps femoris

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21
Q

which muscles plantarflex the ankle?

A

gastrocnemius
soleus

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21
Q

which muscles dorsiflex the ankle?

A

EDL
tibialis anterior

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22
Q

which muscles invert the foot?

A

tibialis anterior

23
Q

which muscles evert the foot?

A

EDL
fibularis longus

24
Q

which muscles extend 2nd to 5th toes?

A

EDL

25
Q

which muscles flex the elbow?

A

biceps brachii
brachioradialis

26
Q

which muscles extend the elbow?

A

triceps brachii (all heads)

27
Q

which muscles pronate the forearm?

A

brachioradialis (assists when movement is resisted)

28
Q

which muscles supinate the forearm?

A

biceps brachii
brachioradialis (assists when movement is resisted)

29
Q

which muscles tilt the pelvis posteriorly?

A

semimembranosus
semitendinosus
biceps femoris (long head)
rectus abdominus

30
Q

which muscles tilt the pelvis anteriorly?

A

quadtratus lumborum
iliospoas (with insertion fixed)

31
Q

which muscles flex the vertebral column?

A

rectus abdominus
external obliques
internal obliques

Iliopsoas (with insertion fixed, flexes trunk toward the thigh - is this the same? I dont know)

32
Q

which muscles extend the vertebral column?

A

erector spinae group

33
Q

which muscles laterally flex the vertebral column?

A

quadratus lumborum (same side)
external obliques (same side)
internal obliques (same side)

34
Q

which muscles rotate the vertebral column to same side?

A

internal obliques

35
Q

which muscles rotate the vertebral column to opposite side?

A

external obliques

36
Q

which muscles flex the neck?

A

SCM
scalenes (anterior only)

37
Q

which muscles extend the neck?

A

levator scapulae
splenius capitus
trapezius (upper fibers)

38
Q

which muscles laterally flex the neck to the same side?

A

SCM
scalenes (all 3)
levator scapulae
splenius capitus
trapezius (upper fibers)

39
Q

which muscles rotate the neck to same side?

A

levator scapulae
splenius capitus

40
Q

which muscles rotate the neck to opposite side?

A

SCM
scalenes (all 3)
trapezius (upper fibers)

40
Q

which muscles fix the last rib during forced inhalation and exhalation?

A

quadratus lumborum

41
Q

which muscles draw ribs inferiorly/superiorly?

A

internal intercostals = inferiorly
external intercostals = superiorly

42
Q

which muscles compress abdominal contents?

A

external obliques
internal obliques

43
Q

which muscle draws down the central tendon and increases the volume of the thoracic cavity?

A

diaphragm

44
Q

which muscles elevate the ribs during inhalation?

A

scalenes (all 3)

45
Q

which muscles elevate the scapula?

A

levator scapulae
trapezius (upper fibers)
rhomboids

46
Q

which muscles depress the scapula?

A

trapezius (lower fibers)

47
Q

which muscles downwardly rotate the scapula?

A

levator scapulae
rhomboids

48
Q

which muscles upwardly rotate the scapula?

A

trapezius (upper & lower fibers)

49
Q

which muscles stabilize the scapula?

A

trapezius (middle fibers)

50
Q

which muscles laterally flex the neck to the same side?

A

SCM
scalenes (all 3)
levator scapulae
splenius capitus
trapezius (upper fibers)

51
Q

which muscles adduct the scapula?

A

trapezius (middle fibers)
rhomboids

52
Q

which muscles laterally tilt/elevate the pelvis?

A

quadratus lumborum

ACMT (20 decks)

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