Lower Limb Class 3 - Anterior Leg, Common Fibular Nerve, Lateral leg, Dorsum of Foot, Ankle Joint & Tibio-fibular Joints

Question 1

What are the 3 muscle components of the lower leg?

Answer 1

Anterior

Lateral

Posterior

Question 2

What are the 4 muscles found in the anterior compartment of the leg?

Answer 2

Tibialis Anterior

Extensor digitorum longus

Extensor hallucis longus

Fibularis Tertius

Question 3

What are the actions of leg muscles found in the anterior compartment?

Answer 3

Dorsiflexion and Invertion at the ankle joint

Extension of the toes

Question 4

The common fibular nerve is a branch of which major nerve?

Answer 4

Sciatic nerve

Question 5

Apart from the common fibular nerve, what is the other branch of the sciatic nerve?

Answer 5

Tibial nerve

Question 6

Which branch of the common fibular nerve innervates the anterior leg muscles and with which artery is it associated?

Answer 6

Deep fibular nerve

Anterior Tibial artery

Question 7

The anterior tibial artery (supplies anterior muscles of leg) is a terminal branch of which artery?

Answer 7

Popliteal artery

Question 8

Which artery is found midway between the malleolis of the ankle?

Answer 8

Dorsalis pedis

Question 9

What are the muscles of the lateral compartment of the leg?

Answer 9

Fibularis longus

Fibularis brevis

Question 10

Which nerve innervates the muscles of the lateral leg?

Answer 10

Superficial Tibial nerve

Question 11

The superficial tibial nerve is a branch of which nerve?

Answer 11

Common fibular

Question 12

What is the function of fibularis longus and brevis?

Answer 12

Eversion

Plantarflexion

Question 13

At which joints of the foot do inversion and eversion occur?

Answer 13

Subtalar

Transverse talar

Question 14

What are the reasons for foot drop and what muscles are mostly affected?

Answer 14

Fibula fracture

Tight plaster cast

Anterior and lateral leg muscles

Question 15

What type of joint of the ankle joint?

Answer 15

Hinge synovial joint

Question 16

What are the articular surfaces of the ankle joint?

Answer 16

Distal end of Tibia and Fibula

Talus

Question 17

Which ligament of the ankle is the weakest?

Answer 17

Lateral ligament

Question 18

Which muscles cause the ankle to dorsiflex?

Answer 18

Tibialis Anterior

Extensor Hallucis Longus

Extensor Digitorum Longus

Question 19

Which muscles cause the ankle to plantar flex?

Answer 19

Gastrocnemius

Soleus

Plantaris

Posterior Tibialis

Question 20

What type of joint is the proximal tibio-fibular joints?

Answer 20

Plane type of synovial joint

Question 21

What type of joint is the distal tibio-fibular joints?

Answer 21

Fibrous joint

Question 22

Which muscle forms the medial border of the popliteal fossa?

Answer 22

Semimembranosus

Question 23

Which muscle forms the lateral border of the popliteal fossa?

Answer 23

Biceps femoris

Question 24

Which muscle forms the inferior border of the popliteal fossa?

Answer 24

Gastrocnemius

Question 25

What can be found within the politeal fossa?

Answer 25

Popliteal artery and vein Tibial Nerve Common fibular nerve Popliteal lymph nodes

Question 26

What are the muscles of the superficial group in the posterior leg?

Answer 26

Gastrocnemius Soleus Plantaris

Question 27

Which nerve innervates Gastrocnemius?

Answer 27

Tibial nerve

Question 28

What structure do the gastrocnemius and soleus muscles form?

Answer 28

Calcaneal tendon (Achilles tendon)

Question 29

What muscle of the posterior leg is the long and thin one?

Answer 29

Plantaris

Question 30

Which nerve innervates all the muscles of the posterior compartment of the leg?

Answer 30

Tibial nerve

Question 31

Which branch of the popliteal artery supplies the posterior compartment of the leg?

Answer 31

Fibular artery

Question 32

Which muscles are found in the deep compartment of the posterior leg?

Answer 32

Popliteus Tibialis Posterior Flexor digitorum longus Flexor hallucis longus

Question 33

Which muscle of the posterior leg is responsible for 'unlocking' the knee joint so that flexion can occur?

Answer 33

Popliteus

Question 34

What are the bones of the foot?

Answer 34

Talus Calcaneus Navicular (boat shaped) Cuboid Cuneiforms Metatarsals

Question 35

What is the deep fascia of the foot known as?

Answer 35

Plantar fascia

Question 36

What are the muscles of the dorsal aspect of the foot?

Answer 36

Extensor digitorum brevis Extensor hallucis brevis

Question 37

What are the muscles found in the plantar aspect of the foot (the layer closest to the ground)?

Answer 37

Flexor digitorum brevis Abductor digit minimi Abductor hallucis

Question 38

What are the muscles found in the plantar aspect of the foot lying deep to the more superficial layer?

Answer 38

Quadratus plantae Lumbricals