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Anatomy Lab 2 > Midterm Op Group 3 > Flashcards

Midterm Op Group 3 Flashcards

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?

A

Superficial peroneal nerve

22
Q

What is the origin of Gastrocnemius?

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?

A

Calcaneus (via Achilles tendon)

24
Q

What is the action of Gastrocnemius?

A

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

25
Q

What is the innervation of Gastrocnemius?

A

Tibial nerve

26
Q

What muscles form the Achilles tendon?

A

Gastrocnemius, soleus, and plantaris

27
Q

What is the origin of Plantaris?

A

Distal posterolateral femur (above lateral head of gastrocnemius)

28
Q

What is the insertion of Plantaris?

A

Calcaneus (via calcaneal or Achilles tendon)

29
Q

What is the action of Plantaris?

A

Plantar flexion of foot (knee flexion v. weak)

30
Q

What is the innervation of Plantaris?

A

Tibial nerve

31
Q

What is the origin of Soleus?

A

Soleal line of tibia, head of fibula and posterior proximal fibula

32
Q

What is the insertion of Soleus?

A

Calcaneus (via calcaneal/Achilles tendon)

33
Q

What is the action of Soleus?

A

Plantar flexion of foot (inversion of foot)

34
Q

What is the innervation of Soleus?

A

Tibial nerve

35
Q

What is a notable characteristic of Soleus?

A

It is the prime mover for plantar flexion.

36
Q

What is the origin of the Tibialis Posterior?

A

Posterior proximal 2/3 of tibia, fibula, and interosseous membrane

37
Q

What is the insertion of the Tibialis Posterior?

A

Fans out over plantar surface of foot (navicular, all 3 cuneiforms, 2-4th metatarsals, cuboid, and calcaneus)

38
Q

What is the action of the Tibialis Posterior?

A

Plantar flexion and inversion of foot

39
Q

What is the innervation of the Tibialis Posterior?

A

Tibial nerve

40
Q

What is the origin of the Popliteus?

A

Distal posterolateral femur

41
Q

What is the insertion of the Popliteus?

A

Proximal posterior tibia (medial side above soleal line)

42
Q

What is the action of the Popliteus?

A

Unlocks knee from extended position (lateral rotation of femur on tibia or medial rotation of tibia on femur and flexion of knee)

43
Q

What is the innervation of the Popliteus?

A

Tibial nerve

44
Q

What is the origin of the Flexor Digitorum Longus?

A

Posterior middle 1/3 of tibia

45
Q

What is the insertion of the Flexor Digitorum Longus?

A

Base of distal phalanges 2-5 (plantar surface)

46
Q

What is the action of the Flexor Digitorum Longus?

A

Flexion of toes 2-5 (at MTP and IP joints - curls toes)

47
Q

What is the innervation of the Flexor Digitorum Longus?

A

Tibial nerve

48
Q

What is the origin of the Flexor Hallucis Longus?

A

Posterior distal 2/3 of fibula and interosseous membrane

49
Q

What is the insertion of the Flexor Hallucis Longus?

A

Distal phalanx of big toe (plantar surface)

50
Q

What is the action of the Flexor Hallucis Longus?

A

Flexion of big toe (at MTP and IP joints, plantar flexion and inversion of foot)

51
Q

What is the innervation of the Flexor Hallucis Longus?

A

Tibial nerve

Anatomy Lab 2 (5 decks)

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