Muscle Actions Flashcards by Justine Gail Orense | Brainscape

Q

buccinator

A

compresses cheeks
controls food during mastication
sucking & whistling

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Q

corrugator supercili

A

“anger wrinkles”
common area for botox injections

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Q

orbicularis oculi

A

squinting motion

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Q

what are our smiling muscles?

A

risorius (pulls corner of mouth)
zygomaticus major & minor (pulls mouth corners)
levator labii superioris (pulls up corner
levator anguli oris (elevates angle of mouth)

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Q

masseter

A

closes & protracts jaw

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Q

temporalis

A

closes & retracts jaw

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Q

lateral pterygoid

A

side to side motions

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Q

medial pterygoid

A

grinding motion

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Q

sternocleidomastoid

A

anterior flexion
rotation
lateral flexion

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Q

splenius capitis

A

extension
lateral flexion
rotation

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Q

splenius cervicis

A

extension
lateral flexion
rotation

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Q

trapezius

A

extension of neck and scapula

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Q

what muscles COMPRESS the abdominal wall?

A

rectus abdominus
transverse abdominus
external/internal obliques

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Q

what FLEXES the lumbar vertebrae?

A

rectus abdominus
Iliopsoas

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Q

what EXTENDS the lumbar vertebrae?

A

latissimus dorsi
erector spinae complex

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Q

what ROTATES the trunk?

A

external and internal obliques

Q

what ADDUCTS the humerus?

A

coracobrachialis
teres major
latissimus dorsi
pectoralis major

Q

what ABDUCTS the humerus?

A

deltoid
supraspinatus

Q

what FLEXES the humerus?

A

coracobrachilis
pectoralis major
deltoid (anterior)

Q

what EXTENDS the humerus?

A

deltoid (posterior)
latissimus dorsi

Q

what muscles FLEXES the elbow?

A

biceps brachii
brachialis
brachioradialis

Q

what muscles EXTENDS the elbow?

A

triceps brachii
anconeus

Q

what are some of the pronators & supinators?

A

pronator teres
pronator quadratus
supinator

Q

flexion of wrist

A

flexor digitorum superficialis
flexor carpi ulnaris
flexor carpi radialis

Q

extension of wrist

A

extensor carpi ulnaris
extensor carpi radialis longus

Q

adduction of wrist

A

flexor carpi ulnaris
extensor carpi ulnaris

Q

abduction of wrist

A

flexor carpi radialis
extensor carpi radialis longus

Q

extension of fingers

A

extensor digitorium

Q

flexion of fingers

A

flexor digitorum superficialis

Q

thumb movement

A

abductor pollicis longus/brevis
extensor pollicis longus/brevis
flexor pollicis longus

Q

hip flexors

A

iliopsoas
pectineus
rectus femoris
sartorius

Q

hip extensors

A

gluetus maximus
biceps femoris
semitendinosus
semimembranosus

Q

hip (thigh) abductors

A

gluteus medius
tensor fasciae latae
sartorius

Q

hip (thigh) adductors

A

adductor longus/magnus
gracilis
pectineus

Q

knee flexion

A

hamstrings
semitendinosus. semimembranosus, sartorius, popliteus

Q

knee extension

A

rectus femoris
vastus lateralis/medialis/intermedius

Q

dorsiflexion of ankle

A

tibialis anterior
extensor digitorum longus

Q

plantar flexion of foot

A

gastrocnemius
soleus
peroneus (fibularis) longus