leg muscles

Question 1

name, origin, insertion, action, layer

Answer 1

tibialis anterior
o: tibia
i: base of 1st metatarsal
a: dorsiflexes and inverts foot
dorsiflexors - anterior group

Question 2

name, origin, insertion, action, layer

Answer 2

extensor hallucis longus
o: surface of fibula
i: base of the distal phalanx of the great toe
a: extends the great toe, dorsiflexes the foot
dorsiflexors - anterior group

Question 3

name, origin, insertion, action, layer

Answer 3

extensors digitorum longus
o: tibia, fibula
i: middle and distal phalanges of toes 2-5
a: extends toes 2-5, dorsiflexes the foot
anterior group - dorsiflexors

Question 4

name, origin, insertion, action, layer

Answer 4

fibularis (peroneus) tertius
o: fibula
i: dorsum of the base of the 5th metatarsal
a: dorsiflexes and everts the foot
dorsiflexors

Question 5

name, origin, insertion, action, layer

Answer 5

fibularis (peroneus) brevis
o: fibula
i: fifth metatarsal
a: everts and weakly platarflexes the foot
evertors - lateral group

Question 6

name, origin, insertion, action, layer

Answer 6

fibularis (peroneus) longus
o: fibula
i: first metatarsal
a: everts and weakly plantarflexes the foot
evertors - lateral group

Question 7

name, origin, insertion, action, layer

Answer 7

gastrocnemius
o: femur
i: posterior surface of calcanues via achilles tendon
a: plantarflexes the foot, fexes the knee
posterior group (plantarflexors) - superficial layer

Question 8

name, origin, insertion, action, layer

Answer 8

soleus
o: fibula, soleil line of the tibia
i: posterior surface of the calcaneus via the achilles tendon
a: plantarflexes the foot
posterior group (plantarflexors) - superficial layer

Question 9

name, origin, insertion, action, layer

Answer 9

plantaris
o: femur, oblique popliteal ligament
i: posterior surface of the calcaneus via the achilles tendon
a: weakly assists in plantarflexion and knee flexion
posterior group, plantarflexors, superficial layer

Question 10

name, origin, insertion, action, layer

Answer 10

popliteus
o: lateral condyle of the femur
i: posterior of tibia
a: unlocks the knee by rotating the femur on the tibia
posterior group, plantarflexors, deep layer

Question 11

name, origin, insertion, action, layer

Answer 11

flexor hallucis longus
o: fibula, interosseuous membrane
i: base of the distal phalanx of the great toe
a: flexes the great toe, plantarflexes the foot
posterior group, plantarflexors, deep layer

Question 12

name, origin, insertion, action, layer

Answer 12

tibialis posterior
o: tibia and fibula
i: metatarsals 2-4
a: plantarflexes and inverts the foot
posterior compartment, plantarflexors, deep layer

Question 13

name, origin, insertion, action, layer

Answer 13

flexor digitorum longus
o: tibia
i: bases of the distal phalanges of toes 2-5
a: flexes toes 2-5, plantarflexes the foot
posterior group, plantarflexors, deep layer