Muscles of the Leg Flashcards
Which muscles are in the anterior compartment of the lower leg? (4)
Tibialis anterior, extensor digitorum longus, extensor hallucis longus, peroneus tertius.
Which movements are produced by the anterior compartment muscles?
Dorsiflexion, inversion.
Which nerve innervates the anterior compartment muscles?
Deep peroneal nerve.
Which muscles are in the posterior compartment of the lower leg? (7)
Gastrocnemius, soleus, plantaris, tibialis anterior, flexor digitorum longus, flexor hallucis longus, popliteus.
Which movements are produced by the posterior compartment muscles?
Plantarflexion, inversion.
Which nerve supplies the posterior compartment muscles?
Tibial nerve
Which muscles are in the lateral compartment of the lower leg? (2)
Peroneus longus, peroneus brevis.
Which movements are produced by the lateral compartment muscles?
Eversion.
Which nerve supplies the lateral compartment muscles?
Superficial peroneal nerve.
Behind which malleolus do most posterior muscles pass?
Medial, enclosed by the flexor retinaculum.
Which way does the popliteus rotate the femur to unlock the knee?
Laterally
Where does the tibialis anterior attach distally?
Medial cuneiform and 1st metatarsal.
Where does the peroneus tertius attach distally?
5th metatarsal.
How many extensor retinaculum are usually present at the ankle?
2
Where do the lateral compartment muscles attach?
Proximally - fibula.
Distally; Medial side of foot (longus), 5th metatarsal (brevis)
