Muscles Of The Lower Limb Flashcards
What are the main actions of the anterior thigh muscles?
Hip flexion, knee extension
What nerve innervates the main anterior thigh muscles?
Femoral nerve
Sartorius
A:flexion of hip, abduction of thigh, flexion of knee
I:femoral nerve
Name the muscles of the medial thigh
Adductor Magnus Adductor longus Adductor brevis Gracilis Obturator externus
What is the main action of the medial thigh muscles?
Adduction
What nerve innervates the medial thigh muscles?
Obturator nerve
Name the muscles of the gluteal region
Gluteus maximus Gluteus medius Gluteus minimus Obturator internus Piriformis Superior gemelli Inferior gemelli Quadratus femoris
Gluteus maximus
I: inferior gluteal nerve
A: extensor of the femur, assists lateral rotation
Gluteus medius and minimus
I: superior gluteal nerve
A: abduct femur, prevent pelvic drop
Obturator internus
A: lateral rotation
I: nerve to obturator internus
Piriformis
A: lateral rotation and abduction
I: nerve to piriformis from sacral plexus
Divides the greater static foremen into superior and inferior
Superior gemelli
A: lateral rotation
I: nerve to obturator internus
Inferior gemelli
A: lateral rotation
I: nerve to quadratus femoris
Quadratus femoris
A: lateral rotation
I: nerve to quadratus femoris
Name the posterior thigh muscles
Semitendinosus
Semimembranosus
Biceps femoris (long and short head)
Semitendinosus
I: tibial nerve
A: extends thigh, flexes leg
Semimembranosus
I: tibial nerve
A: flexes leg, extends thigh
Long head of biceps femoris
I: tibial nerve
A: flexes leg, extends thigh
Short head of biceps femoris
I: common fibular nerve
A: flexes leg, medial rotation
Name the anterior muscles of the thigh
Vastus lateralis Vastus intermedius Vastus medialis Rectus femoris Sartorius Tensor of fascia lata Iliacus Psoas major Psoas minor Iliopsoas Pectineus
Name the muscles of the anterior compartment of the leg
Tibialis anterior
Extensor digitorum longus
Extensor hallicus longus
Fibularis tertius
What nerve supplies the anterior muscles of the leg?
Deep Fibular nerve
What are the main actions of the anterior muscles of the leg?
Dorsiflexion of the foot
Extension of the digits
(Eversion/inversion of foot)
Name the lateral muscles of the leg
Fibularis longus
Fibularis brevis
What are the main actions of the lateral muscles of the leg?
Foot eversion
Some plantarflexion
What nerve innervates the lateral muscles of the leg?
Superficial Fibular nerve
Name the superficial muscles of the posterior leg
Gastrocnemius
Plantaris
Soleus
What innervates the posterior leg muscles?
The tibial nerve
What are the main actions of the superficial posterior leg muscles?
Plantarflexion of the foot
Flexion of the knee
Name the deep muscles of the posterior leg
Popliteus
Flexor hallicus longus
Flexor digitorum longus
Tibialis posterior
What are the actions of the deep posterior leg muscles?
Popliteus initiates flexion of the knee
Flexor hallucis/digitorum longus flex the digits
Tibialis posterior flexes and inverts the foots.
What structures pass under the flexor retinaculum? (Medial to lateral)
Tibialis posterior tendon Flexor digitorum longus tendon Posterior tibial artery Posterior tibial vein Tibial nerve Flexor hallucis longus tendon
TOM, DICK AND VERY NAUGHTY HARRY
