Muscle Action Flashcards by Katie Judd

TMJ depression

lateral pterygoid
suprahyoid
infrahyoid

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TMJ elevation

temporalis
masseter
medical pterygoid

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TMJ protrusion

masseter
lateral pterygoid
medial pterygoid

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TMJ retrusion

temporalis
masseter
digastric

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TMJ side to side

medical pterygoid
lateral pterygoid
masseter
temporalis

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Cervical intervertebral joints: flexion

sternocleidomastoid
longus colli
scalenus muscles

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Cervical intervertebral joints: extension

splenius cervicis
semispinalis cervicis
iliocostalis cervicis
longissimus cervicis
multifidus
trapezius

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Cervical intervertebral joints: rotation and lateral bending

sternocleidomastoid
scalenus muscles
splenius cervicis
longissimus cervicis
levator scapulae
multifidus

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Thoracic and Lumbar intervertebral joints: flexion

rectus abdominis
internal oblique
external oblique

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Thoracic and Lumbar intervertebral joints: extension

erector spinae
quadratus lumborum
multifidus

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Thoracic and Lumbar intervertebral joints: rotation and lateral bending

psoas major
quadratus lumborum
external oblique
internal oblique
multifidus
longissimus thoracis
iliocostalis thoracis
rotatores

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Scapula elevation

upper trapezius

levator scapulae

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Scapula depression

latissimus dorsi
pectoralis major
pectoralis minor
lower trapezius

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Scapula protraction

serratus anterior

pectoralis minor

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Scapula retraction

middle trapezius

rhomboids

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Scapula upward rotation

upper & lower trapezius

serratus anterior

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Scapula downward rotation

rhomboids
levator scapulae
pectoralis minor

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Shoulder flexion

anterior deltoid
coracobrachialis
pectoralis major (clavicular head)
biceps brachii

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Shoulder extension

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

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Shoulder abduction

middle deltoid

supraspinatus

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Shoulder adduction

pectoralis major
latissimus dorsi
teres major

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Shoulder horizontal abduction

posterior deltoid
infraspinatus
teres minor

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Shoulder horizontal adduction

anterior deltoid

pectoralis major

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Shoulder external rotation

teres minor
infraspinatus
posterior deltoid

Shoulder internal rotation

``` subscapularis teres major pectoralis major latissimus dorsi anterior deltoid ```

Elbow flexion

biceps brachii brachialis brachioradialis

Elbow extension

triceps brachii | anconeus

Radioulnar joint: supination

biceps brachii | supinator

Radioulnar joint: pronation

pronator teres | pronator quadratus

Wrist flexion

flexor carpi radialis flexor carpi ulnaris palmaris longus

Wrist extension

extensor carpi radialis longus extensor carpi radialis brevis extensor carpi ulnaris

Wrist radial deviation

extensor carpi radialis longus & brevis flexor carpi radialis extensor pollicis longus & brevis

Wrist ulnar deviation

extensor carpi ulnaris | flexor carpi ulnaris

Finger flexion

flexor digitorum profundus & superficialis flexor digiti minimi (5th digit) interossei lumbricals

Finger extension

extensor digitorum communis extensor indicis (2nd digit) extensor digiti minimi (5th digit)

Finger abduction

dorsal interossei | abductor digiti minimi (5th digit)

Finger adduction

palmar interossei

Thumb flexion

flexor pollicis longus & brevis | opponens pollicis

Thumb extension

extensor pollicis longus & brevis | abductor pollicis longus

Thumb abduction

abductor pollicis longus & brevis

Thumb adduction

adductor pollicis

Thumb opposition

opponens pollicis flexor pollicis brevis abductor pollicis brevis opponens pollicis minimi

Hip flexion

iliopsoas sartorius rectus femoris pectineus

Hip extension

gluteus maximus & medius semitendinosus semimembranosus biceps femoris

Hip abduction

``` gluteus medius gluteus minimus piriformis obturator internus tensor fasciae latae ```

Hip adduction

adductor magnus adductor longus adductor brevis gracilis

Hip internal rotation

``` tensor fasciae latae gluteus medius gluteus minimus pectineus adductor longus ```

Hip external rotation

``` gluteus maximus obturator externus obturator internus piriformis gemelli sartorius ```

Knee flexion

biceps femoris semitendinosus semimembranosus sartorius

Knee extension

rectus femoris vastus lateralis vastus intermedius vastus medialis

Ankle plantarflexion

``` tibialis posterior gastrocnemius soleus peroneus longus peroneus brevis plantaris flexor hallucis ```

Ankle dorsiflexion

tibialis anterior extensor hallucis longus extensor digitorum longus peroneus tertius

Ankle inversion

tibialis posterior tibialis anterior flexor digitorum longus

Ankle eversion

peroneus longus peroneus brevis peroneus tertius

Toe flexion

``` flexor digitorum longus & brevis flexor hallucis longus & brevis flexor digiti minimi brevis quadratus plantae lumbricals ```

Toe extension

extensor digitorum longus & brevis extensor hallucis longus & brevis lumbricals

Toe abduction

abductor hallucis abductor digit minimi dorsal interossei

Toe adduction

adductor hallucis plantar interossei