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Anatomy Exam 3 POINAS > Lecture 17 > Flashcards

Lecture 17 Flashcards

1
Q

gastrocnemius action

A

ankle plantar flexion when knee is extended
raises heel during walking
knee flexion

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2
Q

gastrocnemius PA

A

medial head: popliteal surface of femur
lateral head: lateral femoral condyle

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3
Q

gastrocnemius DA

A

calcaneus (via calcaneal/achilles tendon)

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4
Q

gastrocnemius nerve innervation

A

tibial nerve S1, S2

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5
Q

soleus action

A

ankle plantar flexion independent of knee position
ankle stabilization

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6
Q

soleus PA

A

posterior fibula
soleal line and medial tibia
tendinous arch between the bony attachments

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7
Q

soleus DA

A

calcaneus (via calcaneal/achilles tendon)

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8
Q

soleus nerve innervation

A

tibial nerve S1, S2

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9
Q

plantaris action

A

weakly assists gastrocnemius with ankle plantar flexion

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10
Q

plantaris PA

A

lateral supracondylar line of femur
oblique popliteal ligament

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11
Q

plantaris DA

A

calcaneus (via calcaneal/achilles tendon)

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12
Q

plantaris nerve innervation

A

tibial nerve S1, S2

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13
Q

popliteus action

A

unlocks knee by rotating femur 5 degrees on fixed tibia
medially rotates tibia of unplanted limb

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14
Q

popliteus PA

A

lateral condyle of femur
lateral meniscus

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15
Q

popliteus DA

A

posterior tibia, above soleal line

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16
Q

popliteus nerve innervation

A

tibial nerve L4, L5, S1

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17
Q

flexor hallucis longus action

A

great toe flexion @ ALL joints
weak ankle plantar flexion
supports medial longitudinal arch

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18
Q

flexor hallucis longus PA

A

lower posterior surface of fibula
interosseous membrance

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19
Q

flexor hallucis longus DA

A

base of distal phalanx of great toe

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20
Q

flexor hallucis longus nerve innervation

A

tibial nerve S2, S3

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21
Q

flexor digitorum longus action

A

digits 2-5 flexion
ankle plantar flexion
supports longitudinal arches

22
Q

flexor digitorum longus PA

A

posterior tibia, inferior to soleal line
by a broad tendon to fibula

23
Q

flexor digitorum longus DA

A

bases of distal phalanges of digits 2-5

24
Q

flexor digitorum longus nerve innervation

A

tibial nerve S2, S3

25
Q

tibialis posterior action

A

ankle plantar flexion
foot inversion
maintains medial longitudinal arch

26
Q

tibialis posterior PA

A

interosseous membrane
posterior tibia, inferior to soleal line
posterior surface of fibula

27
Q

tibialis posterior DA

A

tuberosity of navicular
cuneiforms
cuboid
sustenaculum tali of calcaneus
bases of 2nd, 3rd and 4th metatarsals

28
Q

tibialis posterior nerve innervation

A

tibial nerve L4, L5

29
Q

fibularis brevis action

A

subtalar joint eversion
weak ankle plantar flexion

30
Q

fibularis brevis PA

A

inferior lateral fibula

31
Q

fibularis brevis DA

A

lateral side of base of 5th metatarsal

32
Q

fibularis brevis nerve innervation

A

superficial fibular nerve L5, S1, S2

33
Q

fibularis longus action

A

subtalar joint eversion
weak ankle plantar flexion

34
Q

fibularis longus PA

A

head of fibula
superior lateral fibula

35
Q

fibularis longus DA

A

medial cuneiform
base of 1st metatarsal

36
Q

fibularis longus nerve innervation

A

superficial fibular nerve L5, S1, S2

37
Q

tibialis anterior action

A

ankle dorsiflexion
subtalar joint inversion

38
Q

tibialis anterior PA

A

lateral condyle of tibia
superior 1/2 of tibia
interosseous membrane

39
Q

tibialis anterior DA

A

medial cuneiform
base of 1st metatarsal

40
Q

tibialis anterior nerve innervation

A

deep fibular nerve L4, L5

41
Q

extensor hallucis longus action

A

great toe extension
ankle dorsiflexion

42
Q

extensor hallucis longus PA

A

middle anterior fibula
interosseous membrane

43
Q

extensor hallucis longus DA

A

base of distal phalanx of great toe

44
Q

extensor hallucis longus nerve innervation

A

deep fibular nerve L5, S1

45
Q

extensor digitorum longus action

A

digits 2-5 extension
ankle dorsiflexion

46
Q

extensor digitorum longus PA

A

lateral condyle of tibia
superior surface of fibula
interosseous membrane

47
Q

extensor digitorum longus DA

A

middle and distal phalanges of digits 2-5

48
Q

extensor digitorum longus nerve innervation

A

deep fibular nerve L5, S1

49
Q

fibularis tertius action

A

ankle dorsiflexion
aids in subtalar eversion

50
Q

fibularis tertius PA

A

inferior anterior surface of fibula
interosseous membrane

51
Q

fibularis tertius DA

A

dorsum of base of 5th metatarsal

52
Q

fibularis tertius nerve innervation

A

deep fibular nerve L5, S1

Anatomy Exam 3 POINAS (4 decks)

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