Muscles of the anterior and lateral leg

This tutorial covers the anterior and lateral muscles of the leg, focusing on their origins, insertions, innervations, and functions. It divides the muscles into two groups: the anterior extensor group and the lateral fibularis group. Detailed explanations are provided for the tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis longus, and fibularis brevis, including their anatomical features and roles in foot and ankle movements.

Which group does the tibialis anterior muscle belong to?

• Lateral fibularis group

• Anterior extensor group

• Medial adductor group

• Posterior flexor group

What is one of the origin points of the tibialis anterior muscle?

• Medial surface of the fibula

• Lateral surface of the tibia

• Posterior surface of the femur

• Anterior surface of the patella

Which nerve innervates the tibialis anterior muscle?

• Superficial fibular nerve

• Deep fibular nerve

• Sural nerve

• Tibial nerve

What is a primary function of the extensor digitorum longus muscle?

• Plantar flexion

• Dorsiflexion

• Inversion

• Adduction

Where does the extensor digitorum longus muscle insert?

• Distal phalanges of the 1st toe

• Distal phalanges of the 2nd to 5th toes

• Proximal phalanges of the 2nd to 5th toes

• Metatarsal bones

What is the origin of the extensor hallucis longus muscle?

• Anterior surface of the patella

• Medial side of the fibula

• Lateral surface of the tibia

• Posterior surface of the femur

Which function is associated with the extensor hallucis longus muscle?

• Flexion of the knee

• Adduction of the foot

• Dorsal extension of the big toe

• Plantar flexion

Which nerve innervates the fibularis muscles?

• Sural nerve

• Superficial fibular nerve

• Deep fibular nerve

• Tibial nerve

What is the insertion point of the fibularis brevis muscle?

• Calcaneus

• Medial cuneiform bone

• Tuberosity of the 5th metatarsal bone

• First metatarsal bone

What is a function of the fibularis longus muscle?

• Plantar flexion

• Inversion

• Dorsiflexion

• Extension of the knee