Trail Guide to the Body Chapter 7 (100% Correct)

*Gastrocnemius correct answers Superficial Thin Two heads Crosses two joints (knee and ankle) Greek for "belly of the leg" Gastrocnemius Insertion correct answers Calcaneus via calcaneal tendon Gastrocnemius Origin correct answers posterior surfaces of the condyles of the femur Gastrocnemius Action correct answers Flex knee (tibiofemoral joint) Plantar flex ankle (talocrural joint) *Soleus correct answers "Second heart" Deep to gastrocnemius Medial and lateral fibers bulge from sides of leg Thick Soleus Origin correct answers Soleal line; proximal, posterior surface of tibia and posterior aspect of head of fibula Soleus Insertion correct answers Calcaneus via calcaneal tendon Soleus Action correct answers Plantar flex ankle (talocrural joint) *Plantaris correct answers Short muscle belly Longest tendon in the body Oblique angle along popliteal space Absent in 10% of population Plantaris Origin correct answers Lateral supracondylar line of femur Plantaris Insertion correct answers Calcaneus via calcaneal tedon Plantaris Action correct answers Weak plantar flexion of ankle Weak flexion of knee *Popliteus correct answers Small, short belly with diagonal fibers Deepest muscle of posterior knee Only insertion can be palpated "The key which unlocks the knee" Popliteus Origin correct answers Lateral condyle of the femur