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Anatomy Exam 3 POINAS > Lecture 17: Foot Instrinsics > Flashcards

Lecture 17: Foot Instrinsics Flashcards

1
Q

extensor digitorum brevis action

A

aids the extensor digitorum longus with digits 2-4 extension @MTP & IP joints

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2
Q

extensor digitorum brevis PA

A

calcaneus (floor of tarsal sinus)
interosseous talocalcaneal ligament
stem of inferior extensor retinaculum

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3
Q

extensor digitorum brevis DA

A

long extensor tendons of digits 2-4

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4
Q

extensor digitorum brevis nerve innervation

A

deep fibular nerve L5, S1

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5
Q

extensor hallucis brevis action

A

aids the extensor hallucis longus with great toe extension @ MTP & IP joints

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6
Q

extensor hallucis brevis PA

A

calcaneus (floor of tarsal sinus)
interosseous talocalcaneal ligament
stem of inferior extensor retinaculum

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7
Q

extensor hallucis brevis DA

A

dorsal aspect of base of proximal phalanx of great toe

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8
Q

extensor hallucis brevis nerve innervation

A

deep fibular nerve L5, S1

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9
Q

abductor hallucis action

A

1st digit abduction
1st digit flexion

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10
Q

abductor hallucis PA

A

medial tubercle of calcaneal tuberosity
plantar aponeurosis
intermuscular septa

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11
Q

abductor hallucis DA

A

base of proximal phalanx of 1st digit

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12
Q

abductor hallucis nerve innervation

A

medial plantar nerve L5, S1

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13
Q

flexor digitorum brevis action

A

digits 2-5 flexion @ MTP & IP joints

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14
Q

flexor digitorum brevis PA

A

medial tubercle of calcaneal tuberosity
plantar aponeurosis
intermuscular septa

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15
Q

flexor digitorum brevis DA

A

both sides of middle phalanges of digits 2-5

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16
Q

flexor digitorum brevis nerve innervation

A

medial plantar nerve L5, S1

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17
Q

abductor digiti minimi action

A

5th digit abduction and flexion @ MTP & IP joints

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18
Q

abductor digiti minimi PA

A

medial and lateral tubercles of calcaneal tuberosity
plantar aponeurosis
intermuscular septa

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19
Q

abductor digiti minimi DA

A

base of proximal phalanx of 5th digit

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20
Q

abductor digiti minimi nerve innervation

A

lateral plantar nerve S1, S2, S3

21
Q

quadratus plantae action

A

assists flexor digitorum longus with digits 2-5 flexion @ MTP & IP joints

22
Q

quadratus plantae PA

A

medial calcaneus

23
Q

quadratus plantae DA

A

flexor digitorum longus tendon

24
Q

quadratus plantae nerve innervation

A

lateral plantar nerve S1, S2, S3

25
Q

lumbricals action

A

of digits 2-5…
MTP flexion
PIP & DIP extension

26
Q

lumbricals PA

A

flexor digitorum longus tendons

27
Q

lumbricals DA

A

medial aspects of extensor expansions over digits 2-5

28
Q

lumbricals nerve innervation

A

medial one:
medial plantar nerve L5, S1
lateral three:
lateral plantar nerve S1, S2, S3

29
Q

adductor hallucis action

A

1st digit adduction
assists in maintaining transverse arch by pulling metatarsals medially

30
Q

adductor hallucis PA

A

oblique head:
bases of metatarsals 2-4
transverse head:
plantar ligaments of MTP joints

31
Q

adductor hallucis DA

A

lateral side of base of proximal phalanx of 1st digit

32
Q

adductor hallucis nerve innervation

A

lateral plantar nerve S1, S2, S3

33
Q

flexor hallucis brevis action

A

1st MTP joint flexion

34
Q

flexor hallucis brevis PA

A

plantar cuboid
lateral cuneiforms

35
Q

flexor hallucis brevis DA

A

both sides of base of proximal phalanx of 1st digit

2 sesamoid bones are contained within these tendons!

36
Q

flexor hallucis brevis nerve innervation

A

medial plantar nerve L5, S1

37
Q

flexor digiti minimi brevis action

A

5th MTP joint flexion

38
Q

flexor digiti minimi brevis PA

A

base of 5th metatarsal

39
Q

flexor digiti minimi brevis DA

A

base of 5th proximal phalanx

40
Q

flexor digiti minimi brevis nerve innervation

A

lateral plantar nerve S1, S2, S3

41
Q

plantar interossei action

A

digits 3-5 adduction @MTP joint

42
Q

plantar interossei PA

A

plantar medial shafts of metatarsals 3-5

43
Q

plantar interossei DA

A

medial phalanges of digits 3-5

44
Q

plantar interossei nerve innervation

A

lateral plantar nerve S1, S2, S3

45
Q

dorsal interossei action

A

digits 2-4 abduction @MTP joint

46
Q

dorsal interossei PA

A

adjacent sides of shafts of metatarsals 1-5

47
Q

dorsal interossei DA

A

1st:
medial side of proximal phalanx of 2nd digit
2nd-4th:
lateral sides of digits 2-4

48
Q

dorsal interossei nerve innervation

A

lateral plantar nerve S1, S2, S3

Anatomy Exam 3 POINAS (4 decks)

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