Anterior leg muscles

Question 1

What is the origin, insertion, innervation and function of Tibialis anterior

Answer 1

i. Origin: tibia
ii. Insert: 1st (medial) cuneiform, 1st metatarsal
iii. Nerve: deep fibular nerve
iv. Action: dorsiflexion and inversion of foot

Question 2

What is the origin, insertion, innervation and function of Extensor Hallicus longus

Answer 2

i. Origin: fibula
ii. Insert: big toe phalange
iii. Nerve: deep fibular nerve
iv. Action: dorsiflexion of foot, and dorsiflexion of big toe

Question 3

What is the origin, insertion, innervation and function of Extensor digitorum longus

Answer 3

i. Origin: fibula and tibia
ii. Insert: 2nd to 5th toes/digits phalanges
iii. Nerve: deep fibular nerve
iv. Action: dorsiflexion of foot, dorsiflexion of 2-5 digits