Summary Muscle Tables Leg PDF
Document Details
Uploaded by ClearerDream3799
John Carroll University
Tags
Summary
This document provides summary tables for the muscles of the leg, categorized by compartment (anterior, lateral, and posterior). Each table includes muscle names, actions, innervations, and origins/insertions. Useful for students studying human anatomy.
Full Transcript
Summary Muscle Table: ANTERIOR compartment of leg Muscle Action Innervation Origin and Insertion Tibialis anterior Ankle dorsiflexion Inversion of foot Arch support Deep fibular nerve O: lateral tibia and interosseous membrane I: medial cuneiform and base of metatarsal 1 Extensor Extension o...
Summary Muscle Table: ANTERIOR compartment of leg Muscle Action Innervation Origin and Insertion Tibialis anterior Ankle dorsiflexion Inversion of foot Arch support Deep fibular nerve O: lateral tibia and interosseous membrane I: medial cuneiform and base of metatarsal 1 Extensor Extension of big toe hallucis longus Ankle dorsiflexion Deep fibular nerve O: medial fibula and interosseous membrane I: distal phalanx (dorsal) of big toe Extensor digitorum longus Deep fibular nerve O: medial fibula and lateral tibial condyle I: distal and middle phalanges (dorsal) of lateral four toes Extension of lateral four toes Ankle dorsiflexion Summary Muscle Table: LATERAL compartment of leg Muscle Action Innervation Origin and Insertion Fibularis longus Eversion of foot Arch support Superficial fibular nerve O: lateral fibula shaft I: medial cuneiform and base of metatarsal 1 Fibularis brevis Eversion of foot Superficial fibular nerve O: lateral fibula shaft I: base of metatarsal 5 Summary Muscle Table: POSTERIOR compartment of leg Muscle Action Innervation Origin and Insertion Gastrocnemius Knee flexion Ankle plantarflexion Tibial nerve O: Medial head – posterior distal femur, superior to medial condyle O: Lateral head – posterolateral surface of lateral condyle I: via calcaneal (Achilles) tendon to posterior calcaneus Soleus Ankle plantarflexion Tibial nerve O: soleal line on posterior tibia I: via calcaneal (Achilles) tendon to posterior calcaneus Popliteus Unlocks knee (laterally rotates femur on fixed tibia) Tibial nerve O: lateral femoral condyle I: posteromedial proximal tibia Flexor hallucis longus Flexes big toe Tibial nerve O: posterior fibula and interosseous membrane I: distal phalanx (plantar) of big toe Flexor digitorum longus Flexes lateral four toes Tibial nerve O: posteromedial tibia I: distal phalanges (plantar) of lateral four toes Tibialis posterior Ankle plantarflexion Inversion of foot Medial arch support Tibial nerve O: posterior tibia and fibula I: navicular tuberosity and medial cuneiform