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ASMT- A&P2 #6
Muscles of the Leg and Foot
Question | Answer |
---|---|
Anterior Crus Compartment Muscles | tibialis anterior, extensor digitorum longus, extensor hallucis longus |
Tibialis Anterior (structure/relationship) | most superficial of ant. crus |
Tibialis Anterior (function) | dorsal flexion and inversion |
Extensor Digitorum Longus (function) | dorsal flexion and toe extension |
Extensor Hallucis Longus (function) | dorsal flexion and extends big toe |
Lateral Crus Compartment Muscles | fibularis (peroneus) tertius, fiibularis (peroneus) longus, fibularis (peroneus) brevis |
Fibularis (Peroneus) Tertius (function) | eversion |
Fibularis (Peroneus) Longus (structure/relationship) | superficial to brevis, tendon passes post. to lat. maleolus |
Fibularis (Peroneus) Longus (function) | eversion and plantar flexion |
Fibularis (Peroneus) Brevis (structure/relationship) | deep to longus, tendon passes post. to lat. maleolus |
Fibularis (Peroneus) Brevis (function) | eversion and plantar flexion |
Deep Posterior Crus Compartment Muscles | tibialis posterior, flexor digitorum, flexor hallucis, popliteus |
Tibialis Posterior (function) | plantar flexion |
Flexor Digitorum (function) | plantar flexion and flexion of toes |
Flexor Hallucis (function) | plantar flexion and flexion of big toe |
Popliteus (function) | slightly rotates tibia 1 degree |
Superficial Posterior Crus Compartment Muscles | soleus, gastrocnemius, plantaris |
Soleus (structure/relationship) | deepest of superficial muscles, doesn't cross knee joint |
Soleus (function) | plantar flexion |
Gastrocnemius (structure/relationship) | most superficial of superficial group, crosses knee and ankle joint |
Gastrocnemius (function) | plantar flexion and flexion of knee |
Plantaris (structure/relationship) | b/w soleus and gastrocnemeus, crosses knee and ankle joint |
Plantaris (function) | plantar flexion |
Which muscle group forms the achilles tendon? | superficial posterior crus compartment muscles(soleus, gastroc, plantaris) |