occipitofrantalis
raises the eyebrows
orbicularis oculi
closes eye
zygomaticus
raises lateral corners of mouth upward. smiling
levator labii superioris
opens lips
risorius
draws corner of lip laterally. tenses lips
depressor labii inferioris
draws lower lip, pout
depressor anguli oris
draws corners of mouth down and laterally. tragedy mask, grimace
orbicularis oris
closes lips, purses, kissing
mentalis
wrinkles chin
buccinator
compress check, sucking and blowing
platysma
tenses skin of neck
masseter
chewing
temporalis
chewing
medial pterygoid
chewing
lateral pterygoid
chewing
genioglossus
protracts tongue
hyoglossus
depresses tongue
styloglossus
retracts and elevates tongue
sternocleidomastoid
flexes and laterally rotates the head. both contract=neck flexion. one contract=tilts head to opposite side
scalenes
elevates first two ribs
iliocostalis
extend and laterally flex the vertebra column
longissimus
extend and laterally flex vertebral column. extends head and turns the face toward same side
spinalis
extends vertebral column
semispinalis
extends vertebral column and head and rotates them to the opposite side
quadratus lumborum
flexes vertebral column laterally
erector spinae
deepest muscle in back
semispinalis
deepest muscle in back
quadratus lumborum
deepest muscle in back
iliocostalis
erector spinae muscle
longissimus
erector spinae muscle
spinalis
erector spinae muscle
iliocostalis
extends the vertebral column
longissimus
extends the vertebral column
spinalis
extends the vertebral column
semispinalis
extends the vertebral column
quadratus lumborum
flexes vertebral column laterally
external intercostals
pull ribs toward one another to elevate rib cage
internal intercostals
draw ribs together and depress rib cage
diaphragm
prime mover of inspiration
rectus abdominis
flex and rotate lumbar region of vertebral column, increase intra-abdominal pressure
external oblique
flex vertebral column and compress abdominal wall. rotating trunk and flexing laterally
internal oblique
flex vertebral column and compress abdominal wall. rotating trunk and flexing laterally
transversus abdominis
compress abdominal contents
pectoralis minor
ribs fixed, draws scapula forward and downward
serratus anterior
rotates scapula so its inferior angle moves laterally and upward
subclavius
depression of clavicle
trapezius
stabilizes, raises, retracts, and rotates scapula
levator scapulae
elevates/adduct scapula
rhomboids
stabilize scapula
pectoralis major
prime mover of arm flexion, rotates arm medially, adducts arm
detoid
primer mover of arm abduction when all its fibers contract simultaneously
subscapularis
chief medial rotator of humerus
supraspinatus
initiates abduction
infraspinatus
rotates humerus laterally
teres minor
rotates humerus laterally
teres major
extends medially rotates and adducts humerus
triceps brachii
powerful forearm extensor
anconeus
may control ulnar abduction during forearm pronation
biceps brachii
flexes elbow joint and supinates forearm
brachialis
a major forearm flexor
brachioradialis
synergist in flexing forearm
pronator teres
pronates forearm
flexor carpi radialis
powerful flexor of wrist
palmaris longus
tenses skin and fascia of palm during hand movements
flexor carpi ulnaris
powerful flexor of wrist, also adducts hand
flexor digitorum superficialis
flexes wrist and middle phalanges of fingers
flexor pollicis longus
flexion of wrist. flexion on metacarpal phalanges of thumb
flexor digitorum profundus
flexes distal interphalageal joints
pronator quadratus
primer mover of forearm pronation
extensor carpi radialis
extends wrist
extensor carpi radialis brevis
extends and abducts wrist
extensor digitorum
primer mover of finger extension
extensor carpi ulnaris
extends wrist
supinator
assist biceps brachii to forcibly supinate forearm
abductor pollicis longus
abducts and extends thum
extensor pollicis brevis and longus
extends thumb
extensor indicis
extends index finger
abductor pollicis brevis
abducts thumb
flexor pollicis brevis
flexes thumb
opponens pollicis
opposition
adductor pollicis
adducts and helps to oppose thumb
abductor digit minimi
abducts little finger
flexor digit minimi brevis
flexes little finger
opponens digit minimi
helps in opposition
lumbricals
flex fingers at metacarpophalangeal joints but extends fingers at interphalangel joints
palmare interossei
adduct fingers
dorsal interossei
abduct fingers
sartorius
flexes, abducts, and laterally rotates thigh, cross legged position. tailor muscle.
adductor magnus
deep thigh adductor
adductor longus
deep thigh adductor
adductor brevis
deep thigh adductor
pectineus
deep thigh adductor
gracilis
deep thigh adductor
rectus femoris
extends knee and flexes hip
vastus lateralis
extends and stabilizes knee
vastus medialis
extends knee
rectus femoris
quadriceps muscle
vastus lateralis
quadriceps muscle
vastus medialis
quadriceps muscle
vastus intermedius
quadriceps muscle
vastus intermedius
extends knee
tensor fascia latae
steadies knee
gluteus maxiumus
major extensor of thigh
gluteus medius
abducts and medially rotates thigh
gluteus minimus
abducts and medially rotates thigh
piriformis
deep thigh rotator
obturator externus
deep thigh rotator
obturator internus
deep thigh rotator
gemellus
deep thigh rotator
quadratus femoris
deep thigh rotator
bieceps formis
hamstring
semitendinosus
hamstring
semimembranosus
hamstring
bieceps formis
extends thigh and flexes knee
semitendinosus
extends thigh and flexes knee
semimembranosus
extends thigh and flexes knee
tibialis anterior
prime mover of dorsiflexion
extensor digitorum longus
prime mover of toe extension
peroneus tertius
dorsiflexes and everts foot
extensor halluces longus
extends great toe
peroneus longus
plantar flexes and everts foot
peroneus brevis
plantar flexes and everts foot
gastrocnemius
plantar flexes foot
soleus
plantar flexes foot
plantaris
helps to flex knee and plantar flex foot
flexor digitorum longus
planter flexes and inverts foot
flexor halluis longus
planter flexes and inverts foot; flexes great toe
fibialis posterior
primer mover of foot inversion
extensor digitorum brevis
helps extend toes at metatarsophalangeal joints
flexor digitiorum brevis
helps flex toes
abductor hallucis
abducts great toe
abductor digiti minimi
abducts and flexes little toe
flexor accessorius
straightens out the oblique pull of flexor digitorum longus
flexor halluces brevis
flexes great toes
adductor halluces
helps maintain travsverse arch of foot
flexor digiti minimi brevis
flexes little toe