leg Flashcards
tibialis anterior origin?
lateral condyle and superolateral surface of tibia and interosseous membrane
tibialis anterior distal?
medial cuneiform and base of 1st metatarsal
tibialis anterior innervation?
Deep fibular (peroneal) nerve
tibialis anterior action?
Dorsiflexes ankle and inverts foot
extensor digitorum longus origin?
lateral condyle of tibia, superior fibula and interosseous membrane
extensor digitorum longus distal?
middle and distal phalanges of lateral 4 digits
extensor digitorum longus innervation?
Deep fibular (peroneal) nerve
extensor digitorum longus action?
Extends lateral 4 digits and dorsiflexes the ankle
extensor hallucis longus origin?
middle fibula and interosseous membrane
extensor hallucis longus distal?
base of distal phalanx of great toe (hallux)
extensor hallucis longus innervation?
Deep fibular (peroneal) nerve
extensor hallucis longus action?
Extends great toe and dorsiflexes the ankle
fibularis tertius origin?
inferior fibula and interosseous membrane
fibularis tertius distal?
base of 5th metatarsal
fibularis tertius innervation?
Deep fibular (peroneal) nerve
fibularis tertius action?
Dorsiflexes ankle and aids in eversion of foot
fibularis longus origin?
head and superior fibula
fibularis longus distal?
base of 1st metatarsal and medial cuneiform
fibularis longus innervation?
Superficial fibular (peroneal) nerve
fibularis longus action?
Everts foot and weakly plantarflexes ankle
fibularis brevis origin?
inferior fibula
fibularis brevis distal?
dorsal surface of tuberosity on lateral side of base of 5th metatarsal
fibularis brevis innervation?
Superficial fibular (peroneal) nerve
fibularis brevis action?
Everts foot and weakly plantarflexes ankle
gastrocnemius origin?
Lateral Head: lateral condyle of femur
Medial Head: superior to the medial condyle of femur
gastrocnemius distal?
posterior surface of calcaneus via calcaneal tendon
gastrocnemius innervation?
Tibial nerve
gastrocnemius action?
Plantarflexes ankle when knee is extended; raises heel during walking; flexes leg at knee joint
soleus origin?
posterior fibular head and superior fibula; soleal line and middle of tibia; tendinous arch between the bony attachments
soleus distal?
posterior surface of calcaneus via calcaneal tendon
soleus innervation?
Tibial nerve
soleus action?
Plantarflexes ankle independent of knee position; steadies leg on foot
plantaris origin?
lateral supracondylar line of femur; oblique popliteal ligament
plantaris distal?
posterior surface of calcaneus via calcaneal tendon
plantaris innervation?
Tibial nerve
plantaris action?
Weakly assists gastrocnemius in plantarflexing ankle
popliteus origin?
lateral condyle of femur and lateral meniscus
popliteus distal?
tibia superior to soleal line
popliteus innervation?
Tibial nerve
popliteus action?
Weakly flexes knee and unlocks knee; medially rotates tibia of unplanted limb
flexor hallucis longus origin?
posteroinferior fibula; inferior part of interosseous membrane
flexor hallucis longus distal?
base of distal phalanx of great toe (hallux)
flexor hallucis longus innervation?
Tibial nerve
flexor hallucis longus action?
Flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot
flexor digitorum longus origin?
posterior surface of tibia inferior to soleal line; by a broad tendon to fibula
flexor digitorum longus distal?
base of distal phalanges of lateral 4 digits
flexor digitorum longus innervation?
Tibial nerve
flexor digitorum longus action?
Flexes lateral 4 digits; plantarflexes ankle; supports longitudinal arches of foot
tibialis posterior origin?
interosseous membrane; tibia inferior to soleal line; fibula
tibialis posterior distal?
tuberosity of navicular, cuneiform, cuboid, and sustentaculum tali of calcaneus; bases of 2nd, 3rd and 4th metatarsals
tibialis posterior innervation?
Tibial nerve
tibialis posterior action?
Plantarflexes ankle; inverts foot