Calf Muscles Flashcards
What are the muscles of the superficial layer of the posterior compartment
What is the action (s)
Plantaris
Gastrocnemius
Soleus
Plantarflexes the foot
Flexes the knee - (except soleus)
What are the muscles of the deep layer of the posterior compartment
Popliteus
Tibialis Posterior
Flexor Hallucis longus
Flexor Digitorum Longus
What is the innervation of the posterior (superficial and deep) muscles of the lower leg
Tibial Nerve
What is the action of popliteus
Unlocks the knee joint
- laterally rotates thigh on fixed tibia
What is the action(s) of tibialis posterior
Inversion of foot
Plantarflexion of foot
Supports medial arch during walking
What is the action of flexor hallucis longus
Flexes great toe
What is the action of flexor digitorum longus
Flexes lateral four toes
What are the muscles of the lateral compartment of the leg
What is their innervation
Fibularis longus
Fibularis brevis
Superficial fibular nerve (L5,S1,S2)
What is the action(s) of fibularis longus
Eversion of foot
Plantarflexion of foot
Support arches of foot
What is the action of fibularis brevis
Eversion of foot
What are the muscles of the anterior compartment of the lower leg
What is their innervation
Tibialis Anterior
Extensor hallucis longus
Extensor digitorum longus
Fibularis tertius
Deep fibular nerve (L4,L5)
What is the action(s) of tibialis anterior
Dorsiflexion of the foot at the ankle joint
Inversion of foot
Dynamic support of medial arch of foot
What is the action(s) of extensor hallucis longus
Extension of great toe
Dorsiflexion of foot
What is the action(s) of extensor digitorum longus
Extension of lateral 4 digits
Dorsiflexion of foot
