Lower leg muscles flashcards

Gastrocnemius Superficial posterior compartment
ORIGIN:
➢ Medial head: posterior surface of
distal femur superior to medial
condyle
➢ Lateral head: posterior surface of
calcaneus

INSERTION:
➢ Posterior surface of calcaneus via
achilles tendon

INNERVATION:
➢ Tibial nerve

ACTION:
➢ Plantar flexing foot
➢ Flexion of leg
soldance
Soleus Superficial posterior compartment
ORIGIN:
on ➢ Soleal line and media border of tibia

9g
➢ Posterior proximal fibula
➢ Tendinous arch between tibia and
fibula
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INSERTION:
➢ Posterior surface of calcaneus via
achilles tendon

on INNERVATION:
➢ Tibial nerve

oooo ACTION:
Whom ➢ Plantar flexing foot
➢ Skeletal muscle pump

, Plantaris Superficial posterior compartment
ORIGIN:
➢ Lateral supracondylar ridge of the
femur – above lateral head of
gastrocnemius

INSERTION:
➢ Posterior surface of calcaneus via the
achilles tendon

INNERVATION:
➢ Tibial nerve

ACTION:
➢ Plantar flexion of foot
➢ Flexion of leg at knee joint

Popliteus Deep posterior compartment
ORIGIN:
➢ Lateral femoral condyle

Thong INSERTION:
➢ Posterior surface of proximal tibia

INNERVATION:
➢ Tibial nerve
ammo
man
ACTION:
➢ Stabilizes knee joint
➢ Lateral rotation of femur
haha
oooo ➢ Weak flexor of knee