O and I Quiz #6 - fibularis longus to plantaris

What is the origin of the Fibularis (peroneus) longus?

Head of fibula and upper lateral surface of fibula.

What is the insertion of the Fibularis (peroneus) longus?

Base of 1st metatarsal and 1st cuneiform.

What action does the Fibularis (peroneus) longus perform?

Eversion and plantarflexion.

What is the innervation of the Fibularis (peroneus) longus?

Superficial fibular (peroneal) nerve.

What is the origin of the Fibularis (peroneus) brevis?

Lower lateral surface of fibula.

What is the insertion of the Fibularis (peroneus) brevis?

Tuberosity on base of 5th metatarsal.

What action does the Fibularis (peroneus) brevis perform?

Eversion and plantarflexion.

What is the innervation of the Fibularis (peroneus) brevis?

Superficial fibular (peroneal) nerve.

What is the origin of the Gastrocnemius?

1. Medial head: Posterior medial condyle of femur;

2. Lateral head: Posterior lateral condyle of femur.

What is the insertion of the Gastrocnemius?

Calcaneal tuberosity via Achilles' tendon.

What actions does the Gastrocnemius perform?

Plantarflexion and knee flexion.

What is the innervation of the Gastrocnemius?

Tibial nerve.

What is the origin of the Soleus?

Soleal line of tibia, posterior upper fibula, and interosseous membrane.

What is the insertion of the Soleus?

Calcaneal tuberosity on medial side of Achilles' tendon.

What action does the Soleus perform?

Plantarflexion.

What is the origin of the Plantaris?

Lateral supracondylar line of femur.

What is the insertion of the Plantaris?

Calcaneal tuberosity on medial side of Achilles' tendon.

What actions does the Plantaris perform?

Plantarflexion (weak) and knee flexion (very weak).