Distal leg muscle actions and innervations

Question 1

What are the muscles of the anterior compartment ?

Answer 1

Tibialis anterior, Flexor digitorum longus, flexor hallucis longus, peroneus tertius.

Question 2

What are the muscle in the lateral compartment?

Answer 2

Peroneus brevis and longus

Question 3

What are the muscle of the posterior compartment?

Answer 3

Popliteus, Plantaris, Gastrocnemius, Soleus, Tibialis posterior, flexor digitorium longus, and flexor hallucis longus

Question 4

Action of Tibialis anterior

Answer 4

Dorsiflex and invert foot

Question 5

Action of Extensor digitorum longus

Answer 5

Extend digits 2-5, dorsiflex, eversion

Question 6

Action of Extensor hallucis longus

Answer 6

Extend digit 1, dorsiflex, inversion

Question 7

Action of peroneus tertius

Answer 7

eversion

Question 8

Anterior compartment muscles are innervated by…

Answer 8

Deep peroneal nerve

Question 9

Action of peroneus longus

Answer 9

Eversion, plantar flexion

Question 10

Action of peroneus brevis

Answer 10

Eversion, plantar flexion

Question 11

Innervation of lateral compartment muscles?

Answer 11

Superficial peroneal n

Question 12

Action of Gastrocnemius

Answer 12

Powerful plantar flexion, minor knee flexion

Question 13

Action of soleus

Answer 13

plantar flexion

Question 14

Action of Plantaris

Answer 14

Plantar flexion and flex knee

Question 15

Action of popliteus

Answer 15

Flex knee, lateral rotation of femur on the tibia, unlocking the knee.

Question 16

Action of flexor digitorum longus

Answer 16

Flex digits 2-5, plantar flexion, inversion

Question 17

Action of flexor hallucis longus

Answer 17

Flex digit 1, plantar flexion, inversion

Question 18

Action of tibialis posterior

Answer 18

inversion, plantar flexion

Question 19

Innervation of all posterior compartment muscles?

Answer 19

Tibial n.

Question 20

What are the muscles of the foot?

Answer 20

Dorsal: extensor digitorium brevis

Plantar:
Flexor digitorum brevis,
Flexor hallucis brevis, Adductor hallucis, Abductor hallucis, Abductor digiti minimi, Quadratus plantaris.

Question 21

Action of extensor digitorum brevis?

Answer 21

Extend digits 1-4

Question 22

Innervation of extensor digitorum brevis?

Answer 22

deep peroneal

Question 23

Action of adductor hallucis

Answer 23

Adduction of digit 1

Question 24

Action of abductor hallucis

Answer 24

Abduction of digit 1

Question 25

Action of abductor digiti minimi?

Answer 25

Abduction of digit 5

Question 26

Action of flexor digitorum brevis?

Answer 26

Flex digits 2-5

Question 27

Action of quadratus plantae

Answer 27

Assist in flexion of digits 2-5

Question 28

Action of flexor hallucis brevis

Answer 28

Flex digit 1

Question 29

Innervation of flexor hallucis brevis

Answer 29

Median plantar

Question 30

Innervation of flexor digitorum brevis

Answer 30

median plantar

Question 31

Innervation of adductor hallucis

Answer 31

Median plantar

Question 32

Innervation of abductor hallucis

Answer 32

Median plantar

Question 33

Innervation of abductor digiti minimi

Answer 33

lateral plantar

Question 34

Innervation of quadratus plantae

Answer 34

lateral plantar