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SHB Exam 3 > Leg & Popliteal Region > Flashcards

Leg & Popliteal Region Flashcards

1
Q

What innervates the extensor digitorum longus?

A

Deep fibular nerve

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2
Q

What is the main action of the extensor digitorum longus?

A

Extends lateral 4 digits and dorsiflexes foot at ankle

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3
Q

What innervates the extensor hallucis longus?

A

Deep fibular nerve

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4
Q

What is the main action of the extensor hallucis longus?

A

Extends great toe, dorsiflexes foot at ankle

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5
Q

What innervates the fibularis peroneus brevis?

A

Superficial fibular nerve

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6
Q

What is the main action of the fibularis peroneus brevis?

A

Extends foot and weakly plantarflexes foot at ankle

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7
Q

What innervates the fibularis peroneus longus?

A

Superficial fibular nerve

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8
Q

What is the main action of the fibularis peroneus longus?

A

Extends foot and weakly plantarflexes foot at ankle

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9
Q

What innervates the fibularis peroneus tertius?

A

Deep fibular nerve

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10
Q

What is the main action of the fibularis peroneus tertius?

A

Dorsiflexes foot at ankle and aids in eversion of foot

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11
Q

What innervates the flexor digitorum longus?

A

Tibial nerve

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12
Q

What is the main action of the flexor digitorum longus?

A

Flexes lateral four digits and plantarflexes foot at ankle Supports longitudinal arches of foot

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13
Q

What innervates the flexor hallucis longus?

A

Tibial nerve

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14
Q

What is the main action of the flexor hallucis Longus?

A

Flexes all joints of great toe

Weakly plantarflexes foot at ankle

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15
Q

What innervates the gastrocnemius?

A

Tibial nerve

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16
Q

What are the main actions of the gastrocnemius?

A

Plantarflexes foot at ankle joint
Assists in flexion of knee joint
Raises heel during walking

17
Q

What innervates the plantaris?

A

Tibial Nerve

18
Q

What is the main action of the plantaris?

A

Weakly assists gastrocnemius

19
Q

What innervates the popliteus?

A

Tibial nerve (L4-S1)

20
Q

What is the main action of the popliteus?

A

Weakly flexes knee and unlocks it by rotating femur on fixed tibia

21
Q

What innervates the soleus muscle?

A

Tibial nerve

22
Q

What is the main action of the soleus muscle?

A

Plantarflexes foot at ankle and stabilizes leg over foot

23
Q

What innervates the tibialis anterior?

A

Deep fibular nerve

24
Q

What is the main action of the tibialis anterior?

A

Dorsiflexes foot at ankle and inverts foot

25
Q

What innervates the tibialis posterior?

A

Tibial nerve

26
Q

What is the main action of the tibialis posterior?

A

Plantarflexes foot at ankle and inverts foot

27
Q

Origin of tibialis anterior?

A

Lateral condyle of tibia and interosseous membrane

28
Q

Insertion of tibialis anterior?

A

Medial cuneiform and 1st metatarsal

29
Q

Origin of Extensor digitorum longus?

A

Lateral condyle of tibia,interosseous

membrane, and fibula

30
Q

Insertion of Extensor digitorum longus?

A

Phalanges of lateral four digits

31
Q

Origin of Extensor hallucis longus?

A

Fibula and interosseous membrane

32
Q

Insertion of Extensor hallucis longus?

A

Distal phalanx of great toe

33
Q

Describe the route of the popliteal artery.

A

The popliteal artery descends down the posterior thigh, giving off genicular branches that supply the knee joint.

At the lower border of the popliteus, the popliteal artery terminates by dividing into anterior and posterior tibial arteries.

The anterior tibial - dorsalis pedis artery in the foot
The posterior tibial - fibular artery

34
Q

Which muscles evert and which invert?

A 
· Eversion muscles:
	pEroneus longus
	pEroneus brevis
	pEroneus terius
· Inversion muscles:
	tIbialis anterior
	tIbialis posterior
35
Q

Anterior compartment of leg contents at the ankle from medial malleolus

A

The Hamptons Are Never Dull Parties

Tibialis anterior tendon
(extensor) Hallucis longus
Artery (anterior tibial)
Nerve (deep peroneal)
(extensor) Digitorum
Peroneus tertius
36
Q

Popliteal fossa contents medial to lateral

A 
Serve And Volley Next Ball
Semimembranosus/Semitendinosus
Artery
Vein
Nerve
Biceps femoris

SHB Exam 3 (14 decks)

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