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Anatomy > Ankle And Foot Muscles > Flashcards

Ankle And Foot Muscles Flashcards

1
Q

Extensors Digitorum Brevis Origin

A

Anterior part of dorsal surface of calcaneus, anterior and medial to lateral malleolus, inferior extensors retinaculum

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2
Q

Extensor Digitorum Brevis Insertion

A

Lateral 3 tendons attach to tendons of Extensor Digitorum Longus to digits 2-4

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3
Q

Extensor Digitorum Brevis action

A
  • Extend toes 2-4 at MTP joint

- Assist Ext. Dig. Longus

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4
Q

Extensor Digitorum Brevis innervation

A

Deep peroneal n. (L5-S1)

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5
Q

Extensor Hallucis Brevis origin

A

(Same as Ext. Dig. Brevis)

Anterior part of dorsal surface of calcaneus, anterior and medial to lateral malleolus, inferior extensor retinaculum

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6
Q

Extensor Hallucis Brevis Insertion

A

Medial tendon of 4 tendons to base of proximal phalanx of hallux

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7
Q

Extensor Hallucis Brevis action

A
  • Extend hallux at MTP joint

- Assist Ext. Hallucis Longus

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8
Q

Extensor Hallucis Brevis Innervation

A

Deep Peroneal n. (L5-S1)

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9
Q

Muscles on the dorsum of the foot

A
  • extensor Digitorum Brevis

- Extensor Hallucis Brevis

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10
Q

Muscles on the 1st layer of the sole of the foot

A
  • Abductor Hallucis
  • Flexor Digitorum Brevis
  • Abductor Digiti minimi
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11
Q

Abductor Hallucis origin

A
  • Medial process of tuber calcaneus
  • flexor retinaculum
  • plantar aponeurosis
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12
Q

Abductor Hallucis Insertion

A

Medial side of base of proximal phalanx of hallux

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13
Q

Abductor Hallucis action

A

Abducts and flexes hallux

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14
Q

Abductor Hallucis innervation

A

Medial Plantar n. (S1, S2)

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15
Q

Flexor Digitorum Brevis Origin

A
  • Medial process of tuber calcaneus
  • Plantar aponeurosis
  • Intermuscular septum
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16
Q

Flexor Digitorum Brevis Insertion

A

Both sides of middle phalanx of lateral four digits

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17
Q

Flexor Digitorum Brevis action

A

Flexes lateral 4 digits (PIP)

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18
Q

Flexor Digitorum Brevis Innervation

A

Medial Plantar n. (S1-S2)

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19
Q

Abductor Digiti minimi origin

A
  • Medial and lateral processes or tuber calcanei
  • Plantar aponeurosis
  • Intermuscular septum
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20
Q

Abductor Digiti minimi insertion

A

Lateral side of base of proximal phalanx of 5th digit (little toe)

21
Q

Abductor Digiti minimi action

A

Abducts and flexes 5th digit

22
Q

Abductor Digiti minimi innervation

A

Lateral plantar n. (S2-S3)

23
Q

2nd layer of muscles on sole of the foot

A
  • quadratus plantae

- lumbricals

24
Q

Quadratus Plantae origin

A

-Medal surface and lateral margin of plantar surface of calcaneus

25
Q

Quadratus Plantae insertion

A

Posterolateral margin of tendon of Flex. Dig. Longus

26
Q

Quadratus Plantae action

A

Assists Flex. Dig. Longus in flexing lateral 4 digits

27
Q

Quadratus Plantae innervation

A

Lateral Plantar n. (S2-S3)

28
Q

Lumbricals origin

A

Tendons of Flex. Dig. Longus

29
Q

Lumbricals insertion

A
  • Medial sides of bases of proximal phalanges of lateral 4 digits
  • Extensor expansions of tendons of Ext. Dig. Longus
30
Q

Lumbricals action

A
  • Flex proximal phalanges

- Extend middle and distal phalanges of lateral 4 digits

31
Q

Lumbricals Innervation

A

Medial Lumbrical- medial plantar n. (S2-S3)

Lateral 3 lumbricals- lateral plantar n. (S2, S3)

32
Q

3rd layer of muscles on the sole of the foot

A
  • Flexor Hallucis Brevis
  • Adductor Hallucis
  • Flexor Digiti minimi Brevis
33
Q

Flexor Hallucis Brevis origin

A

Plantar surfaces of cuboid and lateral cuneiform bones

34
Q

Flexor Hallucis Brevis insertion

A

Both sides of base of proximal phalanx of hallux

35
Q

Flexor Hallucis Brevis action

A

Flexes proximal phalanx of hallux

36
Q

Flexor Hallucis Brevis Innervation

A

Medial plantar n. (S1-S2)

37
Q

Adductor Hallucis origin

A
  • Oblique head (bases of metatarsals 2-4)

- Transverse head (plantar ligaments of MTP joints)

38
Q

Adductor Hallucis insertion

A

Tendons of both heads attach to lateral side of base of proximal phalanx of hallux

39
Q

Adductor Hallucis action

A
  • ADducts Hallux

- assists in maintaining transverse arch

40
Q

Adductor Hallucis innervation

A

Lateral plantar n. (S2-S3)

41
Q

4th layer of muscles on the sole of the foot

A
  • Plantar interossei (3 muscles)

- Dorsal interossei (4 muscles)

42
Q

Plantar interossei origin

A

Bases and medial sides of metatarsal bones 3-5

43
Q

Plantar interossei insertion

A

Medial side of bases of proximal phalanges of digits 3-5

44
Q

Plantar interossei action

A

ADducts digits (3-5) and flexes MTP joints

45
Q

Plantar interossei innervation

A

Lateral plantar n. (S2, S3)

46
Q

Dorsal interossei origin

A

Adjacent sides of metatarsal bones 1-5

47
Q

Dorsal interossei insertioin

A

1st- medial side of proximal phalanx of 2nd digit

2-4- lateral sides of digits 2-4

48
Q

Dorsal interossei action

A

Abducts digits (2-4) and MTP joints

49
Q

Dorsal interossei innervation

A

Lateral plantar n. (S2-S3)

Anatomy (11 decks)

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