Muscles of Lower Leg Flashcards
1
Q
Tibialis anterior
A
origin = lateral condyle of tibia insertion = base of metatarsal 1, medial cuneiform action = dorsiflexion, inversion of foot innervation = deep peroneal nerve
2
Q
Extensor digitorum longus
A
origin = lateral condyle of tibia insertion = distal phalanges of digits 2-5 action = extends digits 2-5, dorsiflexion of foot innervation = deep peroneal nerve
3
Q
Extensor hallucis longus
A
origin = anterior surface of fibula insertion = dorsal surface of great toe (digit 1) action = extension of digit 1, dorsiflexion of foot innervation = deep peroneal nerve
4
Q
Peroneus brevis
A
origin = lateral, distal fibula insertion = lateral side of 5th metatarsal action = plantarflex + evert (pronate) foot innervation = superficial peroneal nerve
5
Q
Peroneus longus
A
origin = posterior surface of tibia, superior fibula insertion = base of 1st metatarsal action = plantarflex + evert (pronate) foot innervation = superficial peroneal nerve
6
Q
Gastrocnemius
A
origin =
medial head: posterior surface of medial condyle
lateral head: posterior surface of lateral condyle of femur
insertion = posterior surface of calcaneus via achilles tendon
action = plantarflexion of foot, knee flexion
innervation = tibial nerve
7
Q
Soleus
A
origin = posterior surface of tibia, interosseous membrane, medial surface of fibula insertion = posterior surface of calcaneus via achilles action = plantarflexion of foot innervation = tibial nerve
8
Q
Flexor digitorum longus
A
origin = posterior surface of tibia insertion = inferior surface of distal phalanges 2-5 action = flexion of digits 2-5, inversion + plantar flexion of foot innervation = deep peroneal nerve
9
Q
Flexor hallucis longus
A
origin = posterior fibula insertion = inderior surface of distal phalanx of digit 1 action = flexion of digit 1, inversion of plantarflexion of foot innervation = tibial nerve (deep peroneal branch)
