Basic Lower Extremity Muscles and Connections Flashcards
Innervation and action of Gluteus Maximus M
Inferior Gluteal Nerve, extend thigh and assist in lateral rotation
Innervation and action of Gluteus Medius M
Superior gluteal nerve, abduct and medially rotate thigh
Innervation and action of Gluteus Minimus M
Superior Gluteal Nerve, abduct and medially rotate thig
Innervation and action of Tensor Fascia Lata M
Superior Gluteal Nerve, abduct, medially rotate and flex thigh, maintains extended thigh
Innervation and action of Piriformis M
Nerve to piriformis M, laterally rotate extended thigh, abduct flexed thigh, maintains extended thigh
Innvervation and action of Superior Gemellus M
Nerve to Obturator muscle, laterally rotate extended thigh, abduct flexed thigh, stabilize femoral head in the acetabalum
Innervation of Inferior Gemmuls M
Nerve to Quadratus femoris M, laterally rotate extended thigh, abduct flexed thigh, stabilize femoral head in the acetabalum
Innervation and action of Obturator Femoris M
Nerve to the Obturator Femoris, laterally rotate thigh, stabilize femoral head in the acetabalum,
Innervation of Obturator Externus
obturator nerve, laterally rotate thigh, stabilize femoral head in the acetabalum
Innervation of Obturator Internus M
nerve to obturator externus, laterally rotate extended thigh, stabilize femoral head in the acetabalum
innervation of psoas major M, action
lumbar plexus L1-L3, laterally flex the vertebral column, balances and flex the trunk and flex the thigh, when acting with illiacus
Innervation of Illiacus M, action
femoral nerve, flex the thigh and stabilize hip joint
Innervation of Sartorius M, action
femoral nerve, flex, abduct, and laterally rotate thigh, flex at knee
innervation of rectus femoris M and vastus muscles , action
femoral nerve, rectus femoris extends leg at knee, assists illiopsoas muscle in thigh flexion, vastus lateralis M and vastus intermedius M extends leg at knee
innervation of articularis genu M, action
femoral nerve, tightens capsule of knee during leg extension
muscles in medial compartment of thigh
pectineal m, adductor longus m, adductor brevis m, adductor magnus m, gracilis m,
posterior compartment muscles of the thigh
biceps femoris m, semitendinosus M, semimembranous M
innervation of biceps femoris M, action
long head: tibial division of sciatic division, short head: tibial division of sciatic nerve
both heads: flex and laterally rotate the leg when flexed
long head: extend thigh
innervation of semitendinosus M, action
tibial division of sciatic nerve, extend thigh, flex and medially rotate leg when flexed
innervation of semimembranosus M, action
tibial division of sciatic nerve, extend thigh, flex and medially rotate leg when flexed
innervation of tibialis anterior M, action
deep fibular n, dorsiflex the foot and ankle and invert foot
innervation of extensor hallucis longus M, action
deep fibular n, extend hallux, dorsiflex the foot at the ankle
innervation of extensor digitorum longus M, action
deep fibular n, extend digits 2 through 5 and dorsiflex foot
innervation of fibularis tertius M, action
deep fibular n, dorsiflex foot, assist in eversion of foot
innervation of fibularis longus M, action
superficial fibular n, evert foot, assist in plantarflexion
innervation of fibularis brevis M, action
superficial fibular n, evert foot, assist in plantarflexion
innervation of gastrocnemius M, action
tibial n, plantarflexion with extended thighm elevate heel, flex leg
innervation of soleus M, action
tibial nerve, plantarflexion of the foot at the ankle
innervation of plantaris M, action
tibial nerve, weakly assist in the plantarflexion and flexing in the knee
innervation of popliteus M, action
tibial nerve, weakly flex the knee
innervation of flexor hallucis longus M, action
tibial nerve, flex the hallux, weakly plantarflex the foot at the ankle
innervation of flexor digitorum longus M, action
tibial nerve, flex digits 2 through 5, plantarflex the foot at the ankle
innervation of tibialis posterior M, action
tibial nerve, plantarflexion and inversion
innervation of extensor digitorum brevis M, action
tibial nerve, extend digits 2 through 5
innervation of abductor hallucis M, action
medial plantar nerve, abduct and flex the hallux
innervation of flexor digitorum brevis M, action
medial plantar nerve, flex digits 2 through 5, flex digits 2 through five
innervation of abductor digiti minimi M, action
lateral plantar nerve, abduct and flex fifth digit
innervation of quadratus plantae M, action
lateral plantar nerve, assist in flexing digits 2 through 5
lumbrical muscles, action
1st medial plantar nerve, 2nd to fourth lateral plantar nerve
flex metatarsophalangeal joint, extend proximal joint, extend proximal and distal interphalangeal joints
flexor hallucis brevis M, action
medial plantar nerve, flex first proximal phananx
flexor digiti minimi brevis M, action
superficial lateral plantar nerve, flex proximal phalanx of 5th digit
adductor hallucis M, action
deep lateral plantar nerve, adduct hallux
dorsal interossei muscles, action
lateral plantar nerve, abduct digits 3 through 5, flex metatarsophalangeal joint
plantar interossei muscles, action
lateral plantar nerve, adduct digits 3 through 5, flex metatarsophalangeal joint
innervation and action of pectineus m
femoral nerve, adduct and flex thigh
innervation and action of adductor longus m
anterior division of obturator nerve, adduct thigh
innervation and action of adductor brevis m
anterior division of adductor brevis nerve, adduct thigh, assist in thigh flexion
innervation and action of adductor magnus muscle
upper fibers: posterior division obturator nerve
lower fibers: tibial division sciatic nerve
whole muscle: adduct thigh
upper fibers: flex thigh
lower fibers: extend thigh
innervation and action of gracilis muscle
anterior division of obturator nerve, adduct the thigh and assist in medial thigh rotation, flex the leg
innervation and action of extensor hallucis brevis muscle
extend the hallux at the metatarsophalangeal joint, deep fibular nerve
