Retrieval Quiz 22

What muscle performs toe flexion?

Flexor digitorum longus

What muscle performs toe extension?

Extensor digitorum longus

What muscle performs great toe flexion?

Flexor hallucis longus

What muscle performs great toe extension?

Extensor hallucis longus

What muscles perform ankle inversion?

Tibialis posterior, flexor hallucis longus, flexor digitorum longus, tibialis anterior, and extensor hallucis longus

What muscles perform ankle eversion?

Peroneus longus, peroneus brevis, and peroneus tertius

What muscles perform plantarflexion?

Gastrocnemius, soleus, plantaris, tibialis posterior, flexor hallucis longus, flexor digitorum longus, peroneus longus, and peroneus brevis

What muscles perform dorsiflexion?

Tibialis anterior, extensor hallucis longus, extensor digitorum longus, and peroneus tertius

What are the lower leg compartment groups?

Superficial posterior, deep posterior, anterior, and lateral

Gastrocnemius

Origin: posterior medial and lateral condyles of femur. Insertion: calcaneus

Soleus

Origin: posterior interosseous membrane, tibia, and fibula. Insertion: calcaneus

Plantaris

Origin: lateral supracondylar ridge of femur. Insertion: calcaneus

Tibialis Posterior

Origin: interosseous membrane, tibia, and fibula. Insertion: navicular and most tarsals and metatarsals

Flexor Hallucis Longus

Origin: posterior fibula and interosseous membrane. Insertion: plantar base of phalanx of great toe

Flexor Digitorum Longus

Origin: posterior tibia. Insertion: distal phalanx of lesser 4 toes

Tibialis Anterior

Origin: proximal lateral tibia and interosseous membrane. Insertion: first cuneiform and first metatarsal

Extensor Hallucis Longus

Origin: proximal anterior fibula and interosseous membrane. Insertion: dorsum of base of distal phalanx of great toe

Extensor Digitorum Longus

Origin: proximal anterior fibula, interosseous membrane, and anterior lateral condyle of tibia. Insertion: dorsum of base of distal phalanx of 4 lesser toes

Peroneus Longus

Origin: head of fibula and interosseous membrane. Insertion: plantar surface of medial cuneiform and first metatarsal

Peroneus Brevis

Origin: middle lateral fibula. Insertion: base of 5th metatarsal

Peroneus Tertius

Origin: distal medial fibula and interosseous membrane. Insertion: base of 5th metatarsal