Muscles of Lower Limb

Question 1

Superficial muscles of posterior compartment of leg.

Answer 1

Gastrocnemius
Soleus
Plantaris

Question 2

Deep muscles of posterior compartment of leg.

Answer 2

Popliteus
Tibialis posterior
Flexor hallucis longus
Flexor digitorum longus

Question 3

Muscles of lateral compartment of leg

Answer 3

Peroneus longus & brevis

Question 4

Muscles of anterior compartment of leg

Answer 4

Tibialis anterior
Extensor hallucis longus
Extensor digitorum longus
____________

Question 5

Innervation of gastrocnemius

Answer 5

Tibial nerve

Question 6

Action of gastrocnemius

Answer 6

Plantarflexion of foot (at ankle joint)
Flex leg (at knee)

Question 7

Innervation of plantaris

Answer 7

Tibial nerve

Question 8

Action of plantaris

Answer 8

Plantarflexion of foot (at ankle joint) [weak]
Flex leg (at knee)

Question 9

Innervation of soleus

Answer 9

Tibial nerve

Question 10

Action of soleus

Answer 10

Plantarflexion of foot (at ankle joint)

NB: DOESN’T cross knee, so doesn’t influence it.

Question 11

Which compartment does soleus belong to?

Answer 11

Posterior compartment of leg

Question 12

Which compartment does plantaris belong to?

Answer 12

Posterior compartment of leg

Question 13

Which compartment does gastrocnemius belong to?

Answer 13

Posterior compartment of leg

Question 14

Which compartment does gastrocnemius belong to?

Answer 14

Posterior compartment of leg

Question 15

Innervation of popliteus

Answer 15

Tibial nerve

Question 16

Action of popliteus

Answer 16

Stabilise knee joint
Unlock knee joint (lateral rotation of femur)
Weak flexor of knee

Question 17

Innervation of flexor hallucis longus

Answer 17

Tibial nerve

Question 18

Action of flexor hallucis longus

Answer 18

Flexes big toe

Question 19

Innervation of flexor digitorum longus

Answer 19

Tibial nerve

Question 20

Action of flexor digitorum longus

Answer 20

Flexes 4 lateral toes

Question 21

Innervation of tibialis posterior

Answer 21

Tibial nerve

Question 22

Action of tibialis posterior

Answer 22

Inversion of foot
Plantarflexion of foot
Supports medial arch of foot

Question 23

Contents of tarsal tunnel

Answer 23

Tibialis posterior
Flexor digitorum longus
Flexor hallucis longus
____ nerve…

Question 24

Innervation of fibularis longus

Answer 24

Superficial fibular nerve

Question 25

Action of fibularis longus

Answer 25

Eversion of foot Plantarflexion of foot Supports arches

Question 26

Innervation of fibularis brevis

Answer 26

Superficial fibular nerve

Question 27

Action of fibularis brevis

Answer 27

Eversion of foot

Question 28

Innervation of lateral compartment of leg

Answer 28

Superficial fibular nerve

Question 29

Innervation of tibialis anterior

Answer 29

Deep fibular nerve

Question 30

Action of tibialis anterior

Answer 30

Dorsiflexion of foot Inversion of foot Support of medial plantar arch

Question 31

Innervation of anterior compartment of leg

Answer 31

Deep fibular nerve

Question 32

Innervation of extensor hallucis longus

Answer 32

Deep fibular nerve

Question 33

Action of extensor hallucis longus

Answer 33

Extension of big toe | Dorsiflexion of foot

Question 34

Innervation of extensor digitorum longus

Answer 34

Deep fibular nerve

Question 35

Action of extensor digitorum longus

Answer 35

Extension of lateral 4 toes | Dorsiflexion of foot

Question 36

Innervation of fibularis tertius

Answer 36

Deep fibular nerve

Question 37

Action of fibularis tertius

Answer 37

Dorsiflexion of foot | Eversion of foot