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*** Muscles *** > Foot > Flashcards

Foot Flashcards

1
Q

Dorsal muscles

A

Extensor digitorum brevis
Extensor hallucis brevis

Innervated by the deep fibular nerve

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2
Q

Extensor digitorum brevis

Origin

A

Calcaneum
Inferior extensor retinaculum
Interosseous talocalcaneal ligament

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3
Q

Extensor digitorum brevis

Insertion

A

Long extensor tendons of the lateral four digits

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4
Q

Extensor digitorum brevis

Innervation

A

Deep fibular nerve

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5
Q

Extensor digitorum brevis

Function

A

Extends digits at the MTP joints and IP joints

AIDS extensor digitorum longus

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6
Q

Extensor hallucis brevis

Origin

A

Calcaneum
Inferior extensor retinaculum
Interosseous talocalcaneal ligament

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7
Q

Extensor hallucis brevis

Insertion

A

Base of proximal phalanx of the great toe

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8
Q

Extensor hallicus brevis

Innervation

A

Deep fibular nerve

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9
Q

Extensor hallicus brevis

Function

A

Extends great toe at MTP joint

AIDS extensor hallucis longus

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10
Q

Plantar

Layers

A

1st layer
2nd layer
3rd layer
4th layer

10 intrinsic muscles divided into 4 layers
Innervated by the medial plantar nerve or the lateral plantar nerve (branches of the tibial nerve)
All originate from the calcaneus and the plantar aponeurosis

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11
Q

Plantar 1st layer

Muscles

A

Abductor hallucis
Flexor digitorum brevis
Abductor digiti minimi

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12
Q

Abductor hallucis

Origin

A

Medial tubercle of the calcaneus

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13
Q

Abductor hallucis

Insertion

A

Medial base of the proximal phalanx of the great toe

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14
Q

Abductor hallucis

Innervation

A

Medial plantar nerve

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15
Q

Abductor hallucis

Function

A

Abducts and flexes the great toe

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16
Q

Flexor digitorum brevis

Origin

A

Medial tubercle of the calcaneus

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17
Q

Flexor digitorum brevis

Insertion

A

Middle phalanges of the lateral four digits

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18
Q

Flexor digitorum brevis

Innervation

A

Medial plantar nerve

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19
Q

Flexor digitorum brevis

Function

A

Flexes lateral four digits at PIP joints

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20
Q

Abductor digiti minimi

Origin

A

Medial and lateral tubercle of the calcaneus

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21
Q

Abductor digiti minimi

Insertion

A

Lateral base of the proximal phalanx of the 5th digit

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22
Q

Abductor digiti minimi

Innervation

A

Lateral plantar nerve

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23
Q

Abductor digiti minimi

Function

A

Abducts and flexes 5th digit

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24
Q

Plantar 2nd layer

Muscles

A

Quadratus plantae

Lumbricals (x4)

25
Q

Quadratus plantae

Origin

A

Medial and lateral surface of the calcaneus

26
Q

Quadratus plantae

Insertion

A

Tendons of flexor digitorum longus

27
Q

Quadratus plantae

Innervation

A

Lateral plantar nerve

28
Q

Quadratus plantae

Function

A

Flexes lateral 4 digits

AIDS flexor digitorum longus

29
Q

2nd layer

Number of lumbricals

A

4

30
Q

Lumbricals

Origin

A

Tendons of flexor digitorum longus

31
Q

Lumbricals

Insertion

A

Extensor hoods of lateral 4 digits

32
Q

Lumbricals

Innervation

A

Lateral plantar nerve

Except for most medial lumbrical = medial plantar nerve

33
Q

Lumbricals

Function

A

Flexes at the MTP joins

Extends at the IP joints

34
Q

Plantar 3rd layer

Muscles

A

Flexor hallucis brevis
Adductor hallucis
Flexor digiti minimi brevis

35
Q

Flexor hallucis brevis

Origin

A

Plantar surfaces of the cuboid

Tendon of the tibialis posterior

36
Q

Flexor hallucis brevis

Insertion

A

Base of the proximal phalanx of the great toe

37
Q

Flexor hallucis brevis

Innervation

A

Medial plantar nerve

38
Q

Flexor hallucis brevis

Function

A

Flexes great toe at MTP joint

39
Q

Adductor hallucis

Origin

A

Oblique head = base of 2/3/4th metatarsals

Transverse head = plantar ligaments of MTP joints

40
Q

Adductor hallucis

Insertion

A

Lateral base of the proximal phalanx of the great toe

41
Q

Adductor hallucis

Innervation

A

Deep branch of the lateral plantar nerve

42
Q

Adductor hallucis

Innervation

A

Deep branch of the lateral plantar nerve

43
Q

Adductor hallucis

Function

A

Adducts the great toe

Forms the transverse arch of the foot

44
Q

Flexor digiti minimi brevis

Origin

A

Base of 5th metatarsal

45
Q

Flexor digiti minimi brevis

Insertion

A

Base of proximal phalanx of the 5th digit

46
Q

Flexor digiti minimi brevis

Innervation

A

Superficial branch of the lateral plantar nerve

47
Q

Flexor digiti minimi brevis

Function

A

Flexes proximal phalanx of the 5th digit

48
Q

Plantar 4th layer

Muscles

A 
Plantar interossei (x3)
Dorsal interossei (x4)
49
Q

Number of plantar interossei

A

3

50
Q

Number of dorsal interossei

A

4

51
Q

Plantar interossei

Origin

A

Medial side of metatarsals 3-5

52
Q

Plantar interossei

Insertion

A

Medial side of phalanges 3-5

53
Q

Plantar interossei

Innervation

A

Lateral plantar nerve

54
Q

Plantar interossei

Function

A

Adducts digits 3-5

Flexes MTP joints

55
Q

Dorsal interossei

Origin

A

Sides of metatarsals 1-5

56
Q

Dorsal interossei

Insertion

A

Lateral sides of proximal phalanges 2-4

57
Q

Dorsal interossei

Innervation

A

Lateral plantar nerve

58
Q

Dorsal interossei

Function

A

Abducts digits 2-4

Flexes MTP joints

*** Muscles *** (9 decks)

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