Actions muscles of lower limb

47 terms by jfortman34

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Pectineus

adducts, flexes, and medially rotates thigh

Sartorius

abducts, flexes and laterally rotates thigh
flexes and medially rotates leg

Rectus femoris

flexes thigh
extends leg

Vastus lateralis

extends leg

Vastus intermedius

extends leg

Adductor longus

adducts thigh

Adductor brevis

adducts thigh
flexes thigh

Adductor magnus

adducts thigh
adductor part: flexes thigh
hamstrings part: extends thigh

Gracilis

adducts thigh
flexes and medially rotates leg

Obturator

laterally rotates thigh

Gluteus maximus

extends and laterally rotates thigh

Gluteus medius

abducts and medially rotates thigh
keeps pelvis level when standing on one leg

Gluteus minimus

abducts and medially rotates thigh
keeps pelvis level when standing on one leg

Tensor of fascia lata

abducts and medially rotates thigh
keeps pelvis level when standing on one leg

Piriformis

laterally rotates extended thigh
abducts flexed thigh

Obturator internus

laterally rotates extended thigh
abducts flexed thigh

Superior gemullus

laterally rotates extended thigh
abducts flexed thigh

Inferior gemullus

laterally rotates extended thigh
abducts flexed thigh

Quadratus femoris

laterally rotates thigh

Semitendinosus

extends thigh or trunk
flexes and rotates leg medially

Semimembranosus

extends thigh or trunk
flexes and rotates leg medially

Biceps femoris

long head only: extends thigh or trunk
both heads: flex and rotate leg laterally

Tibialis anterior

dorsiflexes and inverts foot

Extensor digitorum longus

extends digits 2-5
dorsiflexes foot

Extensor hallucis longus

extends digit 1
dorsiflexes foot

Fibularis tertius

dorsiflexes and everts foot

Fibularis longus

everts and plantarflexes foot

Fibularis brevis

everts and plantarflexes foot

Gastrocnemius

plantarflexes foot
flexes leg

Soleus

plantarflexes foot

Plantaris

plantarflexes foot

Popliteus

flexes leg
medially rotates tibia
laterally rotates femur to unlock knee

Flexor hallucis longus

flexes digit 1
plantarflexes

Flexor digitorum longus

flexes digits 2-5
plantarflexes foot

Tibialis posterior

plantarflexes and inverts foot

Extensor digitorum brevis

extends digits 2-4

Extensor hallucis brevis

extends digits 1

Dorsal interossei

abducts digits 2-4
flex metatarsophalangeal joints

Abductor hallucis

abducts and flexes digit 1

Flexor digitorum brevis

flexes digits 2-5

Abductor digiti minimi

abducts and flexes digit 5

Quadratus plantae

assists flexor digitorum longus muscles in flexing digits 2-5

Lumbrical

flex metatarsophalangeal joints of digits 2-5
extend interphalangeal joints of digits 2-5

Flexor hallucis brevis

flex proximal phalanx of digit 1

Adductor hallucis

adduct digit 1

Flexor digiti minimi brevis

flexes MTP joints of digit 5

Plantar interossei

adduct digits 3-5, flex MTP joints of digits 3-5

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