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Leg
Muscles
65
Anatomy
Professional
11/19/2011

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Cards

Term
What is the origin of the tibialis anterior muscle?
Definition
lateral surface of tibia and interosseous membrane
Term
What is the insertion of the tibialis anterior muscle?
Definition
medial cuneiform and base of 1st metatarsal bone
Term
What is the action of the tibialis anterior muscle?
Definition
dorsiflexes and inverts foot
Term
What is the nerve supply of the tibialis anterior muscle?
Definition
deep fibular nerve (L4, L5, S1)
Term
What is the blood supply of the tibialis anterior muscle?
Definition
anterior tibial artery
Term
What is the origin of extensor digitorum longus muscle?
Definition
anterior surface of fibula and interosseous membrane
Term
What is the insertion of the extensor digitorum longus muscle?
Definition
extensor expansion of lateral 4 toes
Term
What is the action of the extensor digitorum longus muscle?
Definition
extensor of 2-5 toes and dorsiflexes foot
Term
What is the nerve supply of the extensor digitorum longus muscle?
Definition
deep fibular nerve
Term
What is the blood supply of the extensor digitorum longus muscle?
Definition
anterior tibial artery
Term
What is the origin of the extensor hallucis longus muscle?
Definition
anteromedial fibula and interosseous membrane
Term
What is the insertion of the extensor hallucis longus?
Definition
distal phalanx of big toe (1)
Term
What is the action of the extensor hallucis longus?
Definition
extends big toe and dorsiflexes and inverts foot
Term
What is the nerve supply of the extensor hallucis longus muscle?
Definition
deep fibular nerve (L4, L5, S1)
Term
What is the blood supply of the extensor hallucis longus muscle?
Definition
anterior tibial artery
Term
What was the origin of the fibularis tertius muscle?
Definition
fibula and interosseous membrane
Term
What was the insertion of the fibularis tertius muscle?
Definition
dorusm of 5th metatarsal
Term
What is the action of the fibularis tertius muscle?
Definition
dorsiflexes and everts foot
Term
What is the nerve supply of the fibularis tertius muscle?
Definition
deep fibular nerve (L4, L5, S1)
Term
What is the blood supply of the fibularis tertius muscle?
Definition
anterior tibial artery
Term
What is the origin of the fibularis longus muscle?
Definition
upper 2/3 of fibula
Term
What is the insertion of the fibularis longus muscle?
Definition
base of 1st metatarsal and medial cuneiform bones
Term
What is the action of the fibularis longus muscle?
Definition
plantar flexes and everts foot
Term
What is the nerve supply of the fibularis longus muscle?
Definition
superficial fibular nerve (L4, L5, S1)
Term
What is the blood supply of the fibularis longus?
Definition
branches of fibular artery
Term
What is the origin of the fibularis brevis muscle?
Definition
lower 2/3 of fibula
Term
What is the insertion of the fibularis brevis muscle?
Definition
tuberosity of 5th metatarsal bone
Term
What is the action of the fibularis brevis muscle?
Definition
plantar flexes and everts foot
Term
What is the nerve supply of the fibularis brevis muscle?
Definition
superficial fibular nerve (L4, L5, S1)
Term
What is the blood supply of the fibularis brevis muscle?
Definition
branches of the fibular artery
Term
What is the origin of the gastrocnemius muscle?
Definition
lateral and medial condyles of femur
Term
What is the insertion of the gastrocnemius muscle?
Definition
calcaneus by the achilles tendon
Term
What is the action of the gastrocnemius muscle?
Definition
plantar flexes foot and flexes knee
Term
What is the nerve supply of the gastrocnemius muscle?
Definition
tibial nerve (S1-S2)
Term
What is the blood supply of the gasrocnemius muscle?
Definition
posterior tibial artery
Term
What is the origin of the soleus muscle?
Definition
upper region of tibia and fibula
Term
What is the insertion of the soleus muscle?
Definition
achilles tendon to calcaneus
Term
What is the action of the soleus muscle?
Definition
plantar flexes foot
Term
What is the nerve supply of the soleus muscle?
Definition
tibial nerve (S1-S2)
Term
What is the blood supply of the soleus muscle?
Definition
posterior tibial artery
Term
What is the origin of the plantaris muscle?
Definition
lateral supracondylar ridge of femur
Term
What is the insertion of the plantaris muscle?
Definition
calcaneus and achilles tendon
Term
What is the action of the plantaris muscle?
Definition
assists in flexing knee and plantar flexion of foot
Term
What is the nerve supply of the plantaris muscle?
Definition
tibial nerve L4, L5
Term
What is the blood supply of the plantaris muscle?
Definition
posterior tibial artery
Term
What is the origin of the tibialis posterior muscle?
Definition
superior tibia and fibula and interosseous membrane
Term
What is the insertion of the tibialis posterior muscle?
Definition
navicular, cuneiform, cuboid bones and 2-4 metatarsals
Term
What is the action of the tibialis posterior muscle?
Definition
plantar flexes and inverts foot
Term
What is the nerve supply of the tibialis posterior muscle?
Definition
tibial nerve (L5, S1)
Term
What is the blood supply of the tibialis posterior?
Definition
posterior tibial artery
Term
What is the origin of the flexor digitorum longus muscle?
Definition
posterior tibia
Term
What is the insertion of the flexor digitorum longus?
Definition
distal phalanges of 2-5 toes
Term
What is the action of the flexor digitorum longus?
Definition
plantar flexes and inverts foot, flexes distal phalanges of lateral four toes
Term
What is the nerve supply of the flexor digitorum longus?
Definition
tibial nerve L5, S1
Term
What is the blood supply of the flexor digitorum longus?
Definition
posterior tibial artery
Term
What is the origin of the flexor hallucis longus muscle?
Definition
middle shaft of fibula
Term
What is the insertion of the flexor hallucis longus?
Definition
distal phalanx of big toe (1)
Term
What is the action of the flexor hallucis longus?
Definition
plantar flexes foot and flees distal phalanx of big toe and inverts foot
Term
What is the nerve supply of the flexor hallucis longus?
Definition
tibial nerve L5, S1, S2
Term
What is the blood supply of the flexor hallucis longus?
Definition
posterior tibial artery
Term
What is the origin of the popliteus muscle?
Definition
lateral and posterior surface of the lateral condyle of femur
Term
What is the insertion of the popliteus muscle?
Definition
posterior surface of the upper shaft of tibia
Term
What is the action of the popliteus muscle?
Definition
rotates femur medially to unlock a fully extended knee and flexes knee
Term
What is the nerve supply of the popliteus muscle?
Definition
tibial nerve L4, L5, S1
Term
What is the blood supply of the popliteus muscle?
Definition
posterior tibial artery
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