Lower Body- Muscle Actions Flashcards
Action of the psoas major
flexes the thigh; flexes
laterally bends the lumbar vertebral column
Action of the adductor longus
adducts, flexes, and medially rotates the femur
Action of the flexor digitorum brevis
flexes the metatarsophalangeal & proximal interphalangeal joints of digits 2-5
Action of vastus lateralis
extends the leg
action of the adductor minimus
adducts and laterally rotates the femur
Action of the flexor digitorum longus
flexes the metatarsophalangeal, proximal interphalangeal and distal interphalangeal joints of digits 2-5; plantar flexes the foot
Action of the extensor hallucis brevis
extends the great toe
Action of adductor brevis
adducts, flexes, and medially rotates the femur
Action of vastus intermedius
extends the leg
Action of the pectineus
adducts, flexes, and medially rotates the thigh
Action of the fibularis (peroneus) tertius
everts the foot
Action of semimembranosus
extends the thigh, flexes the leg
Action of the inferior gemellus
lateral rotation of the femur
action of the biceps femoris
extends the thigh, flexes the leg, lateral rotation of knee
Action of the iliacus
flexes the thigh
Action of the popliteus
flexes and rotates the leg medially
Action of the abductor hallucis
abducts the great toe; flexes the metatarsophalageal joint
Action of the quadratus femoris
laterally rotates the thigh
Action of the obturator externus
laterally rotates the thigh
Action of the gluteus medius
abducts the femur; medially rotates the thigh
Action of the lumbricals (foot)
flexes the metatarsophalangeal joint
extends the proximal interphalangeal & distal interphalangeal joints of digits 2-5
Action of the iliopsoas
flexes the thigh
Action of the gastrocnemius
flexes leg; plantar flexes foot
Action of the fibularis (peroneus) longus
extends (plantar flexes) and everts the foot
Action of tibialis anterior
dorsiflexes and inverts the foot
Action of the flexor digiti minimi brevis (foot)
flexes the metatarsophalangeal joint of the 5th digit
Action of the fibularis (peroneus) brevis
extends (plantar flexes) and everts the foot
Action of the gracilis
adducts the thigh, flexes and medially rotates the thigh, flexes the leg
Action of the extensor digitorum longus
extends the metatarsophalangeal, proximal interphalangeal and distal interphalangeal joints of the lateral 4 toes
Action of the gluteus maximus
extends the thigh; laterally rotates the femur
Action of the extensor hallucis longus
extends the metatarsophalangeal interphalangeal joints of the great toe
Action of tibialis posterior
plantar flexes the foot; inverts the foot
Action of the sartorius
flexes, abducts and laterally rotates the thigh; flexes leg
Action of the obturator internus
laterally rotates and abducts the thigh
Action of the abductor digiti minimi (foot)
abducts the 5th toe; flexes the metatarsophalageal joint
Action of the rectus femoris
extends the leg, flexes the thigh
Action of the flexor hallucis brevis
flexes the metatarsophalangeal joint of the great toe
Action of the plantaris
flexes the leg; plantar flexes the foot
action of the extensor digitorum brevis
extends toes 1-4
Action of semitendinosus
extends the thigh, flexes the leg
Action of the flexor hallucis longus
flexes the metatarsophalangeal and proximal interphalangeal joints of the great toe; plantar flexes the foot
Action of adductor hallucis
adducts the great toe (moves it toward midline of the foot; i.e.toward the 2nd digit)
Action of the gluteus minimus
abducts the femur; medially rotates the thigh
Action of the adductor magnus
adducts, flexes, and medially rotates the femur; extends the femur
Action of the piriformis
laterally rotates and abducts thigh
Action of the quadriceps femoris
extends the knee
Action of soleus
plantar flexes the foot
Action of TFL (tensor fasciae latae)
flexes, abducts, and medially rotates the thigh
Action of vastus medialis
extends the leg
Action of superior gemellus
laterally rotates the femur
