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NWHSU GA1- Review mm

muscles in leg/foot

QuestionAnswer
origin and insertion of tibialis anterior o: lateral condyle of tibia, lateral shaft of tibia, interosseous membran I: base of 1st metatarsal - planter surface, medial cuneiform tarsal bone - plantar surface
action of tibialis anterior dorsiflexion of ankle, inversion of foot
innervation of tibialis anterior deep fibular n. (L4,5)
what is the strongest dorsiflexor of the ankle tibialis anterior
origin and insertion of extensor digitorum longus o: lateral condyle of tibia, proximal 2/3 of anterior shaft of fibula I: middle and distal phalanges of 4 lateral toes
action of extensor digitorum longus extension of 4 lateral toes at MP joints, assists dorsiflexion of ankle
innervation of extensor digitorum longus deep fibular n. (L5, S1)
origin and insertion of extensor hallucis longus o: anterior shaft of fibula, interosseous membrane I: base of distal phalanx of the great toe
action of the extensor hallucis longus extension of great toe and IP and MP joints, assists dorsiflexion of ankle
innervation of extensor hallucis longus deep fibula n.(L5,S1)
origin and insertion of fibularis tertius (peroneus tertius) O: anterior distal fibula (with extensor digitorum longus) I: base of 5th metatarsal
action of fibularis tertius eversion of foot, assists dorsiflexion of foot
innervation of fibularis tertius deep fibular n.(L5,S1)
origin and insertion of fibularis longus o: head and lateral shaft of fibula -upper 2/3 I: base of first metatarsal - plantar surface, medial cuneiform tarsal bone-plantar surface
action of fibularis longus eversion of foot, assists plantarflexion of ankle
innervation of fibularis longus superficial fibular n (L5,S1)
origin and insertion of fibularis brevis O: lateral shaft of fibula - lower 2/3 I: base of 5th metatarsal-lateral surface
action of fibularis brevis eversion of foot, assists planterflexion of ankle
innervation of fibularis brevis superficial fibular n (L5,S1)
origin and insertion of gastrocnemius o: Med/head: medial epicondyle of femur Lat/head: lateral epicondyle of femur I: calcaneus via calcaneal tendon(tendo achilles)
Action of gastrocnemius plantarflexion of ankle, assists flexion of knee
innervation of gastrocnemius tibial n. (S1, 2)
what muscles make up the triceps surae gastrocnemius and soleus
origin and insertion of the soleus o: soleal line of tibia, posterior head of fibula, upper shaft of fibula I: calcaneus via calanial tendon (achilles)
action of the soleus plantarflexion of the ankle
innervation of the soleus tibial n. (S1,2)
what is the strongest tendon in the body achilles
origin and insertion of tibialis posterior o: posterior tibia, post. fibula, interosseous membrane I: navicular tarsal bone, adjacent tarsals and metatarsals on planter surface
action of tibialis posterior inversion of foot, assists plantarflexion of ankle
innervation of tibialis posterior tibial n (L4,5)
origin and insertion of flexor digitorum longus o: post. tibia I: distal phalanges of 4 lateral toes - planter surface
action of flexor digitorum longus flesion of 4 lateral toes at IP joints, assists flexion of 4 lateral toes at MP joints, assists plantarflexion of ankle
innervation of flexor digitorum longus tibial N. (S2,3)
origin and insertion of flexor hallucis longus o: post. fibula I: distal phalanx of great toe-plantar surface
actio nof flexor hallucis longus flexion of great toe at IP and MP joints, assists plantarflexion of ankle
innervation of flexor hallucis longus tibial n (S2,3)
origin and insertion of plantaris o: lateral epicondyle of femur I: calcaneus via calcaneal tendon
action of plantaris assists plantarflexion of ankle, assists flexion of knee
innervation of plantaris tibial n (S1,2)
what two muscles does plantaris lie between soleus and gastrocnemius
origin and insertion of popliteus o: lat. condyle of femur I: post. prox. tibial shaft
action of popliteus lateral rotation of femur
funvtion of popliteus unlock knee
innervation of popliteus tibial n. (L4,5,S1)
what muscles all insert into the achilles soleus, gastrocnemeus, plantaris
what two muscles are absent in some people palmaris longus and plantaris
what muscle is the deepest muscle on the posterior knee joint popliteus
origin and insertion of extensor digitorum brevis O: anterior calcaneus I: extensor expansion of 4 medial toes
action of extensor digitorum brevis assists extension of 4 medial toes at MP and IP joints
innervation of extensor digitorum brevis deep fibular n. (L5, S1)
name the muscles in layer 1 of the foot (closest to skin) abductor hallucis, flexor digitorum brevis, abductor digiti minimi
innervation of abductor hallucis medial plantar n (S2,3)
innervation of flexor digitorum brevis medial plantar n (S2,3)
innervation of abductor digiti minimi lateral plantar n (S2,3)
name the muscles in layer 2 of the foot lumbricals, quadratus plantae
innervation of lumbricals 2nd toe: medial plantar n., 3rd/4th/5th toe: lateral plantar n.
innervation of quadratus plantae lateral plantar n. (S2,3)
name the muscles in layer 3 of the foot flexor hallucis brevis, adductor hallucis, flexor digiti minimi brevis
innervation of flexor hallucis brevis medial plantar n
innervation of adductor hallucis lateral plantar n.
innervation of flexor digiti minimi brevis lateral plantar n.
name the muscles in layer 4 of the foot dorsal interossei (4), plantar interossei (3)
innervation of dorsal interossei lateral plantar n.
innervation of plantar interossei lateral planter n.
Created by: brownoldshoes