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

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

1
Q

What are the 3 muscle components of the lower leg?

A

Anterior

Lateral

Posterior

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2
Q

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

A

Tibialis Anterior

Extensor digitorum longus

Extensor hallucis longus

Fibularis Tertius

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3
Q

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

A

Dorsiflexion and Invertion at the ankle joint

Extension of the toes

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4
Q

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

A

Sciatic nerve

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5
Q

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

A

Tibial nerve

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6
Q

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

A

Deep fibular nerve

Anterior Tibial artery

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7
Q

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

A

Popliteal artery

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8
Q

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

A

Dorsalis pedis

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9
Q

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

A

Fibularis longus

Fibularis brevis

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10
Q

Which nerve innervates the muscles of the lateral leg?

A

Superficial Tibial nerve

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11
Q

The superficial tibial nerve is a branch of which nerve?

A

Common fibular

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12
Q

What is the function of fibularis longus and brevis?

A

Eversion

Plantarflexion

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13
Q

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

A

Subtalar

Transverse talar

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14
Q

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

A

Fibula fracture

Tight plaster cast

Anterior and lateral leg muscles

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15
Q

What type of joint of the ankle joint?

A

Hinge synovial joint

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16
Q

What are the articular surfaces of the ankle joint?

A

Distal end of Tibia and Fibula

Talus

17
Q

Which ligament of the ankle is the weakest?

A

Lateral ligament

18
Q

Which muscles cause the ankle to dorsiflex?

A

Tibialis Anterior

Extensor Hallucis Longus

Extensor Digitorum Longus

19
Q

Which muscles cause the ankle to plantar flex?

A

Gastrocnemius

Soleus

Plantaris

Posterior Tibialis

20
Q

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

A

Plane type of synovial joint

21
Q

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

A

Fibrous joint

22
Q

Which muscle forms the medial border of the popliteal fossa?

A

Semimembranosus

23
Q

Which muscle forms the lateral border of the popliteal fossa?

A

Biceps femoris

24
Q

Which muscle forms the inferior border of the popliteal fossa?

A

Gastrocnemius

25
Q

What can be found within the politeal fossa?

A

Popliteal artery and vein

Tibial Nerve

Common fibular nerve

Popliteal lymph nodes

26
Q

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

A

Gastrocnemius

Soleus

Plantaris

27
Q

Which nerve innervates Gastrocnemius?

A

Tibial nerve

28
Q

What structure do the gastrocnemius and soleus muscles form?

A

Calcaneal tendon (Achilles tendon)

29
Q

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

A

Plantaris

30
Q

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

A

Tibial nerve

31
Q

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

A

Fibular artery

32
Q

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

A

Popliteus

Tibialis Posterior

Flexor digitorum longus

Flexor hallucis longus

33
Q

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

A

Popliteus

34
Q

What are the bones of the foot?

A

Talus

Calcaneus

Navicular (boat shaped)

Cuboid

Cuneiforms

Metatarsals

35
Q

What is the deep fascia of the foot known as?

A

Plantar fascia

36
Q

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

A

Extensor digitorum brevis

Extensor hallucis brevis

37
Q

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

A

Flexor digitorum brevis

Abductor digit minimi

Abductor hallucis

38
Q

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

A

Quadratus plantae

Lumbricals

Anatomy (26 decks)

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