Muscles (actions only) Flashcards by P M

Q

frontalis

A

elevate eyebrow

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Q

occipitalis

A

pull scalp posteriorly

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Q

orbicularis oris

A

closing lips, kissing

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Q

buccinator

A

chew, whistle, cheek compression

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Q

masseter

A

primary mover, elevate mandible

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Q

temporalis

A

elevate jaw, close jaw at rest

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Q

sternocleidomastoid

A

forward neck flexion, rotate head side to side

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Q

coracobrachialis

A

adducts arm, flex arm at shoulder

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Q

biceps brachii

A

flexion elbow, supination of forearm

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Q

brachialis

A

primary mover, flexion forearm

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Q

triceps brachii

A

extend forearm at elbow

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Q

pronator teres

A

forearm pronation

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Q

flexor carpi radialis

A

primary mover, wrist flexion/abduction

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Q

palmaris longus

A

weak flexor wrist

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Q

extensor digitorum

A

primary mover finger extension 2-5

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Q

extensor carpi ulnaris

A

extension of wrist, adduction of hand

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Q

supinator

A

supinates forearm

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Q

abductor pollicis longus

A

abducts thumb

Q

pectoralis minor

A

protracts shoulder, rotate scapula

Q

teres major

A

extension, adduction, medially rotate arm

Q

teres minor (rotator cuff)

A

lateral rotation of arm

Q

infraspinous (rotator cuff)

A

lateral rotation of arm

Q

supraspinous (rotator cuff)

A

abducts and stabilize humerus

Q

subscapularis (rotator cuff)

A

medially rotate humerus

levator scapulae

elevates scapula, adduction

external intercostals

pulls ribs towards each other, elevate rib cage, inspiration

internal intercostals

pull ribs apart, depress rib cage, expiration

iliopsoas

primary hip flexion

external oblique

compress abdominal region, trunk rotation

internal oblique

compress abdominal region, trunk rotation

transverse abdominis

compress abdominal region

Gracilis

adducts thigh, flex and medially rotate leg

Tensor fascia latae

flexes, abducts, medially rotate thigh

vastus lateralis (quadriceps)

extends leg and stabilizes knee

vastus intermedius (quadriceps)

extends leg

vastus medialis (quadriceps)

extends leg, stabilizes patella

semitendinosus (hamstrings)

extends thigh, flexes leg

semimembranosus (hamstrings)

extends thigh, flexes leg

gluteus maximus

powerful thigh extensor

soleus

plantar flexion

fibularis longus

plantar flexion and everts foot

extensor digitorum longus

prime mover of toe extension

extensor hallucis longus

extends big toe, dorsiflexion

tibialis anterior

prime mover of dorsiflexion