click below
click below
Normal Size Small Size show me how
NWHSU GA1- Review mm
muscles in leg/foot
Question | Answer |
---|---|
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. |