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Anatomy - Semester 2 > Anterior/ Lateral Leg & Dorsum Of Foot > Flashcards

Anterior/ Lateral Leg & Dorsum Of Foot Flashcards

1
Q

Name the muscles in the lateral compartment

A

2 muscles: Peroneus Longus and Peroneus Brevis

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2
Q

Which nerve innervates the lateral compartment?

A

Superficial Peroneal Nerve (L5, S1, S2)

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3
Q

Function of Peroneus Brevis

A

Eversion of the foot

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4
Q

Function of Peroneus Longus

A

Eversion of the foot and some plantarflexion of foot

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5
Q

Attachments of Peroneus Brevis

A

Originates: Lower 2/3 of Lateral Fibula shaft
Insertion: Lateral tubercle at bade of 5th metatarsal

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6
Q

Attachments of Peroneus Longus

A

Originates: Head and Lateral 2/3 of Fibula shaft
Insertion: Base of 1st metatarsal and medial cuniform

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7
Q

Name the muscles in the Anterior Compartment

A

4 Muscles: Tibialis Anterior, Peroneus Tertius, Extensor Digitorum Longus and Extensor Hallucis Longus

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8
Q

Which nerve innervates the anterior compertment?

A

Deep Peroneal Nerve (L4,L5)

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9
Q

Function of Tibialis Anterior

A

Dorsiflexion and inversion of foot, support at medial arch

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10
Q

Function of Extensor Hallucis Longus

A

Extension of hallux (big toe) and dorsiflexion of foot

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11
Q

Function of Extensor Digitorum Longus

A

Extension of toes and dorsiflexion of foot

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12
Q

Function of Peroneus Tertius

A

Dorsiflexion and assists in eversion of foot

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13
Q

Attachments of Tibialis Anterior

A

Origin: Lateral condyle of Tibia, interosseus membrane and Lateral Tibial surface
Insertion: Medial and inferior surfaces of medial cuniform and adjacent surfaces on base of 1st metatarsal

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14
Q

Attachments of Extensor Hallucis Longus

A

Origin: middle anterior surface of Fibula and interosseus membrane
Insertion: Dorsal aspect of distal Phalanx of Hallux

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15
Q

Attachments of Extensor Digitorum Longus

A

Origin: lateral tibial condyle, superior 3/4 of medial surface of Fibula, interosseous membrane
Insertion: Medial and Distal phalanges of lateral 4 digits

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16
Q

Attachments of Peroneus Tertius

A

Origin: Inferior 1/3 anterior Fibula and Interosseous membrane
Insertion: Dorsum of base of 5th metatarsal

17
Q

Superior Extensor Retinacula: Attachments

A

Origin: Anterior border of the tibia
Insertion: Lower end of the Fibula

18
Q

Inferior Extensor Retinacula: Attachments

A

Y- Shaped
Origin: laterally to calcaneous
Insertion: upper section to medial malleolus; lower section to pass around medial border and blend with fascia

19
Q

Name the muscles of the Dorsum of foot

A

Extensor Hallucis Brevis and Extensor Digitorum Brevis

20
Q

Which nerve innervates muscles of Dorsum of Foot

A

Deep Peroneal Nerve BUT at (L5, S1)

21
Q

Attachments of Extensor Hallucis Brevis

A

Origin: common origin of Superior surface of Calcaneus and inferior extensor retinaculum
Insertion: base of proximal phalanx of Hallux

22
Q

Attachments of Extensor Digitorum Brevis

A

Origin: common origin of Superior surface of Calcaneus and inferior extensor retinaculum
Insertion: Long extensor tendon of digits 2-4

23
Q

Name the 2 terminal branches of the sciatic nerve

A

Tibial nerve and Common Peroneal nerve

24
Q

Where does the Sciatic Nerve divide?

A

Popliteal Fossa

25
Q

Where does the Common Peroneal nerve divide?

A

after wrapping around the neck of the fibula

26
Q

What are the terminal branches of the Common Peroneal nerve?

A

Deep Peroneal nerve and Superficial Peroneal nerve

27
Q

When does the Superficial Peroneal nerve become cutaneous?

A

after supplying the lateral compartment, about half way down the leg

28
Q

Cutaneous innervation from Superficial Peroneal nerve supplies what part of leg?

A

distal anterior surface of leg and most of the dorsum of the foot

29
Q

Cutaneous innervation from Deep Peroneal nerve supplies what part of the leg?

A

just innervation to the veb between digits 1 and 2. (hallux and second digit)

30
Q

What name is given to the Femoral artery after exiting adductor hiatus?

A

Popliteal artery

31
Q

What are the terminal branches of the Popliteal artery?

A

Anterior Tibial artery and Posterior Tibial Artery, which gives the Peroneal (Fibular) Artery

32
Q

What does the Anterior Tibial Artery supply?

A

runs on the anterior surface of interosseous membrane and supplies Anterior Compertment

33
Q

What does the Posterior Tibial Artery supply?

A

Primarily supplies the Posterior compartment

34
Q

What does the Peroneal artery supply?

A

The Lateral Compartment

35
Q

What is the Anterior Tibial artery called after the ankle joint?

A

The Dorsalis Pedis

36
Q

What branches does the Dorsalis Pedis give?

A

Lateral Tarsal Artery; Deep Plantar Artery; Acruate Artery; Metatarsal and Digital Arteries

37
Q

What does the Deep Plantar artery supply?

A

The sole of the foot, dives between digits 1 and 2

38
Q

What does the Metatarsal and Digital arteries supply?

A

These are small branches of the acruate and deep plantar arteries that supply the digits

Anatomy - Semester 2 (6 decks)

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