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Occupation & Movement > Muscle Actions > Flashcards

Muscle Actions Flashcards

1
Q

Sternocleidomastoid

A

Uni - ipsilateral lateral flexion, contralateral rotation

Bi - neck flexion, thoracic cage elevation (inspiration)

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2
Q

Scalenes

A

Anterior - ipsilateral neck flexion, contralateral rotation & bilateral 1st rib elevation, flexion
Middle - ipsilateral neck flexion, contralateral rotation & bilateral 1st rib elevation, flexion
Posterior - ipsilateral neck flexion, contralateral rotation & bilateral 2nd rib elevation**

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3
Q

Descending part of trapezius

A

Uni - ipsilateral flexion of neck

Bi - extension of head/neck

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4
Q

Internal intercostals

A

Depress ribs (forced expiration)

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5
Q

External intercostals

A

Elevate ribs (inspiration)

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6
Q

Diaphragm

A

Separates thoracic & abdominal cavity, primary muscle of respiration

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7
Q

External obliques

A

Uni - contralateral trunk rotation, ipsilateral lateral flexion
Bi - trunk flexion, viscera compression, assist in respiration

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8
Q

Transversus abdominus

A

Compress abdomen, support viscera

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9
Q

Rectus abdominus

A

Trunk flexion, compression of viscera, forced expiration

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10
Q

Splenius capitis

A

Uni - ipsilateral lateral flexion & rotation of head

Bi - extension of head/neck

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11
Q

Splenius cervicis

A

Uni - ipsilateral flexion and rotation of head

Bi - extension of head/neck

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12
Q

Erector spinae: iliocostalis

A

Trunk extension & lateral flexion

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13
Q

Erector spinae: longissimus

A

Trunk extension & lateral flexion (capitis rotates)

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14
Q

Erector spinae: spinalis

A

Trunk extension & lateral flexion

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15
Q

Transversospinales: multifidi

A

Spinal extension & stabilization

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16
Q

Transversospinales: semispinales

A

Thoracis: trunk extension, lateral rotation
Colli: extension, cervical spine rotation
Capitis: extension, rotation of head

17
Q

Transversospinales: rotatores

A

Trunk extension, rotation & stabilization

18
Q

Pec major

A

Adduction, internal rotation
Upper: shoulder flexion, horizontal adduction
Lower: shoulder extension

19
Q

Pec minor

A

Scapular protraction, scapular depression, downward rotation of scapula

20
Q

Subclavius

A

Stabilizes clavicle

21
Q

Trapezius

A

Upper: head extension, ipsa lateral flexion of neck, contra lateral rotation, scapular elevation & upward rotation
Middle: scapular adduction & stabilization
Lower: scapular depression & upward rotation

22
Q

Latissimus dorsi

A

Extension, adduction, internal rotation

23
Q

Levator scapulae

A

Uni - scapular elevation & downward rotation, ipsilateral neck rotation, lateral neck flexion
Bi - neck extension

24
Q

Rhomboid major

A

Scapular retraction, downward rotation & elevation

25
Q

Rhomboid minor

A

Scapular retraction, elevation & downward rotation

26
Q

Deltoid

A

Anterior: flexion, internal rotation
Middle: abduction
Posterior: extension, external rotation

27
Q

Supraspinatus

A

Abduction, stabilization of GH joint

28
Q

Infraspinatus

A

External rotation, adduction, stabilization of GH joint

29
Q

Teres minor

A

External rotation, adduction, horizontal abduction, stabilization of GH joint

30
Q

Subscapularis

A

Internal rotation, stabilization of GH joint

31
Q

Teres major

A

Adduction, internal rotation, extension

32
Q

Coracobrachialis

A

Flexion, adduction

33
Q

Biceps brachii

A

Elbow flexion, supination

34
Q

Brachialis

A

Elbow flexion

35
Q

Brachioradialis

A

Elbow flexion

36
Q

Triceps brachii

A

Elbow extension

37
Q

Anconeus

A

Elbow extension

Occupation & Movement (3 decks)

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