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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) |