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Anatomy Lab 2 > Midterm Op Group 3 > Flashcards

Midterm Op Group 3 Flashcards

(51 cards)

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1
Q

What is the origin of Tibialis Anterior?

A

Anterior proximal tibia, crural fascia (lateral tibial condyle, proximal 2/3 of anteriolateral surface of tibia and interosseous membrane)

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2
Q

What is the insertion of Tibialis Anterior?

A

Medial cuneiform and base of 1st metatarsal

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3
Q

What is the action of Tibialis Anterior?

A

Dorsiflexion and inversion of ankle

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4
Q

What is the innervation of Tibialis Anterior?

A

Deep peroneal (fibular) nerve

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5
Q

What is a notable characteristic of Tibialis Anterior?

A

It is the main dorsiflexor of the foot.

If there is a lesion to the deep peroneal nerve, it can result in foot drop.

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6
Q

What is the origin of Extensor Digitorum Longus?

A

Proximal 2/3 of fibula, interosseous membrane, lateral condyle of tibia

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7
Q

What is the insertion of Extensor Digitorum Longus?

A

Dorsal surface of digits 2-5 (via dorsal expansion to middle and distal phalanges)

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8
Q

What is the action of Extensor Digitorum Longus?

A

Extension of digits 2-5 (at MTP and IP joints), dorsiflexion and eversion of foot

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9
Q

What is the innervation of Extensor Digitorum Longus?

A

Deep peroneal (fibular) nerve

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10
Q

What is the origin of Extensor Hallucis Longus?

A

Anterior middle 1/3 of fibula and interosseous membrane

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11
Q

What is the insertion of Extensor Hallucis Longus?

A

Base of distal phalanx of big toe (dorsal surface)

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12
Q

What is the action of Extensor Hallucis Longus?

A

Extension of big toe (at MTP, IP joint), dorsiflexion and inversion of foot

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13
Q

What is the innervation of Extensor Hallucis Longus?

A

Deep peroneal (fibular) nerve

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14
Q

What is the origin of Fibularis (Peroneus) Tertius?

A

Distal 1/3 of anterior fibula

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15
Q

What is the insertion of Fibularis (Peroneus) Tertius?

A

Base of 5th metatarsal (dorsal)

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16
Q

What is the action of Fibularis (Peroneus) Tertius?

A

Dorsiflexion and eversion of foot

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17
Q

What is the innervation of Fibularis (Peroneus) Tertius?

A

Deep peroneal (fibular) nerve

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18
Q

What is the origin of Fibularis (Peroneus) Longus?

A

Head and proximal lateral shaft of fibula

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19
Q

What is the insertion of Fibularis (Peroneus) Longus?

A

Medial cuneiform and base of 1st metatarsal

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20
Q

What is the action of Fibularis (Peroneus) Longus?

A

Eversion and plantar flexion of foot

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21
Q

What is the innervation of Fibularis (Peroneus) Longus?

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A

Superficial peroneal nerve

22
Q

What is the origin of Gastrocnemius?

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A

Medial head: above medial condyle of femur (posterior); Lateral head: above lateral condyle of femur (posterior)

23
Q

What is the insertion of Gastrocnemius?

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A

Calcaneus (via Achilles tendon)

24
Q

What is the action of Gastrocnemius?

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A

Plantar flexion of foot (knee flexion and inversion of foot)

25
What is the innervation of Gastrocnemius?
Tibial nerve
26
What muscles form the Achilles tendon?
Gastrocnemius, soleus, and plantaris
27
What is the origin of Plantaris?
Distal posterolateral femur (above lateral head of gastrocnemius)
28
What is the insertion of Plantaris?
Calcaneus (via calcaneal or Achilles tendon)
29
What is the action of Plantaris?
Plantar flexion of foot (knee flexion v. weak)
30
What is the innervation of Plantaris?
Tibial nerve
31
What is the origin of Soleus?
Soleal line of tibia, head of fibula and posterior proximal fibula
32
What is the insertion of Soleus?
Calcaneus (via calcaneal/Achilles tendon)
33
What is the action of Soleus?
Plantar flexion of foot (inversion of foot)
34
What is the innervation of Soleus?
Tibial nerve
35
What is a notable characteristic of Soleus?
It is the prime mover for plantar flexion.
36
What is the origin of the Tibialis Posterior?
Posterior proximal 2/3 of tibia, fibula, and interosseous membrane
37
What is the insertion of the Tibialis Posterior?
Fans out over plantar surface of foot (navicular, all 3 cuneiforms, 2-4th metatarsals, cuboid, and calcaneus)
38
What is the action of the Tibialis Posterior?
Plantar flexion and inversion of foot
39
What is the innervation of the Tibialis Posterior?
Tibial nerve
40
What is the origin of the Popliteus?
Distal posterolateral femur
41
What is the insertion of the Popliteus?
Proximal posterior tibia (medial side above soleal line)
42
What is the action of the Popliteus?
Unlocks knee from extended position (lateral rotation of femur on tibia or medial rotation of tibia on femur and flexion of knee)
43
What is the innervation of the Popliteus?
Tibial nerve
44
What is the origin of the Flexor Digitorum Longus?
Posterior middle 1/3 of tibia
45
What is the insertion of the Flexor Digitorum Longus?
Base of distal phalanges 2-5 (plantar surface)
46
What is the action of the Flexor Digitorum Longus?
Flexion of toes 2-5 (at MTP and IP joints - curls toes)
47
What is the innervation of the Flexor Digitorum Longus?
Tibial nerve
48
What is the origin of the Flexor Hallucis Longus?
Posterior distal 2/3 of fibula and interosseous membrane
49
What is the insertion of the Flexor Hallucis Longus?
Distal phalanx of big toe (plantar surface)
50
What is the action of the Flexor Hallucis Longus?
Flexion of big toe (at MTP and IP joints, plantar flexion and inversion of foot)
51
What is the innervation of the Flexor Hallucis Longus?
Tibial nerve

Anatomy Lab 2 (5 decks)

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