5.2 Anatomy of the Muscular System Part 11 Flashcards
What is the origin and insertion of the gastrocnemius?
origin = posterior surfaces of medial and lateral femoral condyles
insertion = posterior surface of calcaneus via achilles tendon
What is the action of the gastrocnemius?
plantarflexion of foot and knee flexion
What is the innervation of the gastrocnemius?
tibial nerve
What is the origin and insertion of the soleus?
origin = posterior surface of the tibia and medial region of the posterior tibia
insertion = posterior surface of calcaneus via achilles tendon
What is the action of the soleus?
plantarflexion of foot
What is the innervation of the soleus?
tibial nerve
What is the origin and insertion of the tibialis posterior?
origin = posterior surface of the tibia, interosseus membrane, and medial surface of the fibula
insertion = navicular bone, cuneiform, cuboid, and metatarsals 2-4
What is the action of the tibialis posterior?
plantarflexion and inversion and adduction of foot
What is the innervation of the tibilais posterior?
tibial nerve
What is the origin and insertion of the flexor digitorum longus?
origin = posterior surface of tibia
insertion = inferior surface of distal phalanges 2-5
What is the action of the flexor digitorum longus?
flexion of digits 2-5 and inversion and plantarflexion of foot
What is the innervation of flexor digitorum longus?
deep peroneal nerve
What is the origin and insertion of the flexor hallicus longus?
origin = posterior fibula
insertion = inferior surface of distal phalanx of digit 1
What is the action of the flexor hallicus longus?
flexion of digit 1 and inversion and plantarflexion of foot
What is the innervation of flexor hallicus longus?
tibial nerve; deep peroneal branch
