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Anterolateral Leg Muscles
Origins, Insertions, Innervation, Action, and Blood Supply for the muscles of the anterolateral leg.
30
Anatomy
Graduate
10/06/2011

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Term
Tibialis anterior: origin
Definition
lateral condyle and proximal half of lateral tibia
Term
Tibialis anterior: insertion
Definition
medial plantar surfaces of medial cueniform and base of metatarsal I
Term
Tibialis anterior: innervation
Definition
Deep fibular n. (L4,L5)
Term
Tibialis anterior: action
Definition
dorsiflexes ankle and inverts foot
Term
Tibialis anterior: blood supply
Definition
anterior tibial a.
Term
Extensor hallucis longus: origin
Definition
middle half of anterior surface of fibula and interosseous membrane
Term
Extensor hallucis longus: insertion
Definition
base of distal phalanx of great toe (toe 1)
Term
Extensor hallucis longus: innervation
Definition
deep fibular n. (L5,S1)
Term
Extensor hallucis longus: action
Definition
extends toe 1 and dorsiflexes ankle
Term
Extensor hallucis longus: blood supply
Definition
anterior tibial a.
Term
Extensor digitorum longus: origin
Definition
lateral condyle of tibia and prox 3/4 ant. IO membrane
Term
Extensor digitorum longus: insertion
Definition
middle and distal phalanges of toes II to V
Term
Extensor digitorum longus: innervation
Definition
deep fibular n. (L5,S1)
Term
Extensor digitorum longus: action
Definition
extends toes II to V and dorsiflexes ankle
Term
Extensor digitorum longus: blood supply
Definition
anterior tibial a.
Term
Fibularis tertius: origin
Definition
distal 1/3 of ant. fibula and IO membrane
Term
Fibularis tertius: insertion
Definition
dorsum of base of metatarsal V
Term
Fibularis tertius: innervation
Definition
Deep fibular n. (L5,S1)
Term
Fibularis tertius: action
Definition
dorsiflexes ankle and aids in eversion of foot
Term
Fibularis tertius: blood supply
Definition
anterior tibial a.
Term
Fibularis longus: origin
Definition
head and prox 2/3 of lateral fibula
Term
Fibularis longus: insertion
Definition
plantar base of metatarsal I and medial cuneiform
Term
Fibularis longus: innervation
Definition
Superficial fibular n. (L5 to S2)
Term
Fibularis longus: action
Definition
everts foot and weakly plantarflexes ankle
Term
Fibularis longus: blood supply
Definition
anterior tibial a.,
fibular a.
Term
Fibularis brevis: origin
Definition
distal 2/3 of lateral fibula
Term
Fibularis brevis: insertion
Definition
dorsal surface of tuberosity on base of metatarsal V
Term
Fibularis brevis: innervation
Definition
Superficial fibular n. (L5 to S2)
Term
Fibularis brevis: action
Definition
everts foot and weakly plantarflexes ankle
Term
Fibularis brevis: blood supply
Definition
fibular a.
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