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Anatomy Second Semester > Anterior And Lateral Leg And Dorsum Of The Foot > Flashcards

Anterior And Lateral Leg And Dorsum Of The Foot Flashcards

1
Q

What are the compartments of the leg

A

Anterior, lateral and posterior

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2
Q

What does the interosseous membrane provide

A

A surface for muscle attachment

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3
Q

What direction do the fibres of the interosseous membrane pass

A

Inferolaterally from the tibia to fibula

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4
Q

What does the interosseous membrane help resist

A

The downwards pull of the muscles attached to the fibula

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5
Q

What type of joint is the superior tibiofibular

A

Plane synovial joint

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6
Q

What does the superior tibiofibular joint involve

A

The head of the fibula and the facet on the lateral tibial condyle

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7
Q

What causes movement of the superior tibiofibular joint

A

Dorsiflexion of the ankle

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8
Q

What is the function of the muscles of the lateral compartment

A

Evertors of the foot

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9
Q

Where do the tendons of the muscles of the lateral compartment run in relation to the lateral malleolus

A

They run posteriorly to it

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10
Q

What are the muscles of the lateral compartment

A

Peroneus longus and peroneus brevis

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11
Q

Attachment of peroneus longus

A

The head and upper 2/3rds of the lateral fibula

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12
Q

Insertion of peroneus longus

A

The base of the 1st metatarsal and medial cuniform

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13
Q

Innervation of peroneus longus

A

The superficial peroneal nerve (L5-S2)

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14
Q

Attachment of peroneus brevis

A

The inferior 2/3rds of the lateral fibula

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15
Q

Insertion of peroneus brevis

A

The lateral side of the base of the 5th metatrsal

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16
Q

Innervation of peroneus brevis

A

The superfical peroneal nerve (L5-S2)

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17
Q

What does the peroneus longus tendon run below

A

The peroneal trochlea of the calcaneus

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18
Q

What does the peroneus brevis tendon run above

A

The peroneal trochlea of the calcaneus

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19
Q

What is the function of the muscles of the anterior compartment

A

Extension of the ankle joint and digits

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20
Q

Where do the tendons of the anterior compartment muscles run

A

Anterior to the ankle joint

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21
Q

What is ankle flexion

A

Dorsiflexion

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22
Q

What are the muscles of the anterior compartment

A

Tibialis anterior, extensor digitorum longus, peroneus tertius and extensor hallucis longus

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23
Q

What innervates the muscles of the anterior compartment

A

The deep peroneal nerve (L4, L5)

24
Q

Attachment of tibialis anterior

A

Lateral condyle of the tibia, superior 1/2 of the lateral tibial surface and the interosseous membrane

25
Insertion of tibialis anterior
Medial and inferior surface of the medial cuniform and the base of the 1st metatarsal
26
Function of tibialis anterior
Dorsiflexion of the ankle and inverts the foot
27
Attachment of extensor digitorum longus
The lateral condyle of the tibia, superior 3/4th of the medial surface of the fibula and the interosseous membrane
28
Insertion of extensor digitorum longus
Middle and distal phalanges of the lateral 4 digits
29
Function of extensor digitorum longus
Dorsiflexes the ankle and extends the lateral 4 digits
30
Attachment of extensor hallucis longus
Middle anterior surface of the fibula and interosseus membrane
31
Insertion of extensor hallucis longus
Dorsal aspect of the distal phalanx of hallux
32
Function of extensor hallucis longus
Extends the hallux and dorsiflexes the ankle
33
Attachment of peroneus tertius
Inferior 1/3rd of the anterior fibula and insterosseus membrane
34
Insertion of peroneus tertius
Dorsum of the base of the 5th metatarsal
35
Function of peroneus tertius
Dorsiflexes the ankle and assists in eversion of the foot
36
Portions of the flexor retinaculum
Superior and inferior
37
Where does the superior portion of the flexor retinaculum run from/to
The anterior border of the tibia to the lower end of the fibula
38
Where does the inferior portion of the flexor retinaculum run from/to
Stem - calcaneus laterally (from) Upper limb - medial malleolus (to) Lower limb - passes around the medial border of the foot to blend with the fascia over abductor hallucis (to)
39
What is the common origin of the muscles of the dorsum of the foot
Superior surface of calcaneus and the inferior flexor retinaculum
40
What are the muscles of the dorsum of the foot
Extensor hallucis brevis and extensor digitorum brevis
41
Insertion of extensor hallucis brevis
The base of the proximal hallux
42
Insertion of extensor digitorum brevis
Long extensor tendon of the 2nd-4th digits
43
Innervation of the muscles of the dorsum of the foot
The deep peroneal nerve (L5, S1)
44
what does the superficial peroneal nerve branch from
Common peroneal
45
Where does the superficial peroneal nerve run
Between peroneus longus
46
What does the superficial peroneal nerve supply
The lateral compartment leg muscles, cuatneous innervation to the distal anterior suface of the leg and most of the dorsum of the foot
47
What does the deep peroneal nerve branch from
The common peroneal
48
Where does the deep peroneal run
Between peroneus longus and the neck of the fibula
49
What does the deep peroneal nerve supply
All anterior compartment muscles, muscles of the dorsum of the foot and cutaneous innervation to the skin between digits 1 and 2
50
What provides cuatneous innervation to the lateral leg
The sural nerve
51
What provides cuatneous innervation to the anterior leg
The saphenous nerve
52
Branches of the popliteal artery
Anterior and posterior tibial arteries
53
What does the posterior tibial artery give rise to
The fibular artery
54
What artery passes through the interosseous membrane and descends on it
The anterior tibial artery
55
What is dorsalis pedis
A continuation of the anterior tibial artery
56
Branches of dorsalis pedis
Lateral tarsal, deep plantar and arcuate arteries
57
What does the arcuate artery anastamose with
The lateral tarsal artery

Anatomy Second Semester (27 decks)

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