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

Q

levator scapulae

A

elevates scapula, adduction

Q

external intercostals

A

pulls ribs towards each other, elevate rib cage, inspiration

Q

internal intercostals

A

pull ribs apart, depress rib cage, expiration

Q

iliopsoas

A

primary hip flexion

Q

external oblique

A

compress abdominal region, trunk rotation

Q

internal oblique

A

compress abdominal region, trunk rotation

Q

transverse abdominis

A

compress abdominal region

Q

Gracilis

A

adducts thigh, flex and medially rotate leg

Q

Tensor fascia latae

A

flexes, abducts, medially rotate thigh

Q

vastus lateralis (quadriceps)

A

extends leg and stabilizes knee

Q

vastus intermedius (quadriceps)

A

extends leg

Q

vastus medialis (quadriceps)

A

extends leg, stabilizes patella

Q

semitendinosus (hamstrings)

A

extends thigh, flexes leg

Q

semimembranosus (hamstrings)

A

extends thigh, flexes leg

Q

gluteus maximus

A

powerful thigh extensor

Q

soleus

A

plantar flexion

Q

fibularis longus

A

plantar flexion and everts foot

Q

extensor digitorum longus

A

prime mover of toe extension

Q

extensor hallucis longus

A

extends big toe, dorsiflexion

Q

tibialis anterior

A

prime mover of dorsiflexion