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Anatomy: Muscles > Action > Flashcards

Action Flashcards

1
Q

Frontal belly of occipitofrontalis

A

Moves scalp, wrinkles forehead, elevates eyebrows

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2
Q

Occipital belly of occipitofrontalis

A

Moves scalp slightly posterior (wiggle ears)

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3
Q

Orbicularis oris

A

Closes lips, puckers lips

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4
Q

Platysma

A

Pulls lower lip inferiorly, tenses skin of neck and contributes to depression of mandible

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5
Q

Buccinator

A

Compresses cheek, holds food between teeth during chewing, aids in sucking and blowing

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6
Q

Temporalis

A

Elevates and retracts mandible

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7
Q

Masseter

A

Elevates and protracts mandible; prime mover of jaw closure

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8
Q

Medial and lateral pterygoid

A

Elevate and protract mandible and move it side to side during chewing

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9
Q

Sternocleidomastoid

A

Both: flexion of head and neck
One: turns head to opposite side of muscle contracting

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10
Q

Splenis capitus

A

Both: pulls head back, extends and hyperextends
One: turns head to same side

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11
Q

Semispinalis capitus

A

Both: pulls head back, extends and hyperextends
One: turns head to same side

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12
Q

External intercostals

A

Elevates ribs during inhalation (move up and out like bucket handle)

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13
Q

Internal intercostals

A

Depresses ribs during forced exhalation

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14
Q

Diaphragm

A

Moves inferiorly to expand thoracic cavity

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15
Q

External oblique

A

Both: compress abdomen, flex vertebral column
One: lateral flexion of vertebral column

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16
Q

Internal oblique

A

Both: compress abdomen, flex vertebral column
One: lateral flexion of vertebral column

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17
Q

Transverse abdominus

A

Compresses the abdomen

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18
Q

Rectus abdominus

A

Flexes vertebral column and compresses abdominal wall, forceful exhalation

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19
Q

Pectoralis minor

A

Protracts and depresses the scapula (hunch shoulders)

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20
Q

Serratus anterior

A

Prime mover that protracts and depresses scapula, stabilizes the scapula, and superiorly rotates scapula

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21
Q

Rhomboid major

A

Retracts and elevates scapula and inferiorly rotates scapula

22
Q

Rhomboid minor

A

Retracts and elevates scapula and inferiorly rotates scapula

23
Q

Trapezius

A

Elevates and retracts the scapula, draws head back

24
Q

Latissimus Dorsi

A

Prime mover of arm extension and draws it downward and backward while rotating medially

25
Q

Pectoralis major

A

Prime mover of arm flexion, also adducts and medially rotates arm

26
Q

Deltoid

A

Anterior: flex and medially rotate arm
Middle: prime movers of abduction
Posterior: extend and laterally rotate arm

27
Q

Coracobrachialis

A

Adductor and flexes arm

28
Q

Teres major

A

extends and adducts arm at shoulder joint, drawing it down and back while rotation medially

29
Q

Subscapularis

A

Medially rotates arm, wind up to pitch

30
Q

Supraspinatus

A

Abducts the arm as when you start to execute pitch

31
Q

Infraspinatus

A

Adductor and laterally rotates arm like slowing your arm down

32
Q

Teres minor

A

Adductor and laterally rotates arm like slowing it down after pitch

33
Q

Biceps brachii

A

Flexes elbow at joint and powerful supination

34
Q

Triceps brachii

A

Primary extensor of elbow joint

35
Q

Psoas major

A

Flexes thigh

36
Q

Iliacus

A

Flexes thigh

37
Q

Gracilis

A

Adductor and flexes thigh, flexes leg

38
Q

Tensor fasciae latae

A

Abducts thigh and medially rotates thigh

39
Q

Gluteus Maximus

A

Extends and rotates thigh laterally

40
Q

Rectus femoris

A

Extends leg, flexes thigh

41
Q

Vastus lateralis

A

Extends leg, flexes thigh

42
Q

Vastus medialis

A

Extends leg

43
Q

Vastus intermedius

A

Extends leg

44
Q

Biceps femoris

A

Extends thigh(long head only), flexes knee, laterally rotates leg

45
Q

Semimembranosus

A

Extends thigh and flexes knee, medially rotates leg

46
Q

Semitendinosus

A

Extends thigh and flexes knee, medially rotates leg

47
Q

Tibialis anterior

A

Dorsiflexes foot and inverts foot

48
Q

Peroneus longus

A

Everts foot and a weak plantar flexor

49
Q

Gastrocnemius

A

Flexes leg and plantar flexes foot

50
Q

Soles

A

Plantar flexes foot

51
Q

Sartorius

A

Flexes thigh and laterally rotates thigh, flexes leg and rotates it medially

Anatomy: Muscles (9 decks)

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