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Posterior Leg (Region 4)
Origin, Insertion, Action, Nerve, Blood
10
Anatomy
Graduate
06/20/2010

Additional Anatomy Flashcards

 


 

Cards

Term
Name the superficial muscles of the posterior leg...
Definition

1. Gastrocnemius

2. Soleus

3. Plantaris

Term
Gastrocnemius
Definition

O: above medial condyle of femur (medial head);

above lateral condyle of femur (lateral head)

 

I: calcaneus (via Achilles tendon)

 

A: plantar flexion of foot;

knee flexion & inversion of foot (weak actions)

 

N: tibial nerve

 

B: sural branches of popliteal artery

Term
Soleus
Definition

O: soleal line of tibia & upper fibula

 

I: calcaneus (via Achilles tendon)

 

A: plantar flexion of foot;

inversion of foot (weak action)

 

N: tibial nerve

 

B: posterior tibial artery

Term
Plantaris
Definition

O: distal posterolateral femur (above lateral head of gastrocnemius)

 

I: calcaneus (via Achilles tendon)

 

A: plantar flexion of foot;

knee flexion (very weak action)

 

N: tibial nerve

 

B: popliteal artery

Term
Name the deep muscles of the posterior leg...
Definition

1. Popliteus

2. Flexor hallucis longus

3. Flexor digitorum longus

4. Tibialis posterior

Term
Popliteus
Definition

O: lateral femoral condyle

 

I: proximal posterior tibia (medial side above soleal line)

 

A: unlocks knee from extended position;

lateral rotation of femur on tibia or medial rotation of tibia on femur & flexion of knee

 

N: tibial nerve

 

B: inferior medial genicular artery, posterior tibial artery

Term

Flexor hallucis longus

(Harry)

Definition

O: posterior inferior 2/3 of fibula & interosseous membrane

 

I: distal phalanx of big toe (plantar surface)

 

A: flexion of big toe;

plantar flexion & inversion of foot

 

N: tibial nerve

 

B: posterior tibial artery, peroneal artery

Term

Flexor digitorum longus

(Dick)

Definition

O: posterior middle 1/3 of tibia

 

I: base of distal phalanges 2-5 (plantar surface)

 

A: flexion of toes 2-5;

plantar flexion & inversion of foot (weak action)

 

N: tibial nerve

 

B: posterior tibial artery

Term

Tibialis posterior

(Tom)

Definition

O: posterior proximal 2/3 of tibia, fibula & interosseous membrane

 

I: fans out over plantar surface of foot

 

A: plantar flexion & inversion of foot

 

N: tibial nerve

 

B: posterior tibial artery

Term
Tom, Dick, and Harry
Definition

Tom

Tibialis posterior

 

Dick

flexor Digitorum longus

 

AN

posterior tibial Artery, tibial Nerve

 

Harry

flexor Hallucis longus

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