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Gross Anatomy Muscle Attachments > Muscles of the Lower Extremity: Intinsic Muscles of the Foot > Flashcards

Muscles of the Lower Extremity: Intinsic Muscles of the Foot Flashcards

1
Q

Extensor Digitorum Brevis Proximal Attachment

A

Dorsolateral surface of the calcaneus

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2
Q

Extensor Digitorum Brevis Distal Attachment

A

Joins lateral sides of EDL tendons of toes 2-4

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3
Q

Extensor Digitorum Brevis Innervation

A

Deep fibular n. [L5,S1]

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4
Q

Extensor Digitorum Brevis Action

A

Extends MTP, PIP, & DIP joints of toes 2-4

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5
Q

Extensor Hallucis Brevis Proximal Attachment

A

Dorsal surface of the calcaneus

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6
Q

Extensor Hallucis Brevis Distal Attachment

A

Dorsal surface of the proximal phalanx of the great toe

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7
Q

Extensor Hallucis Brevis Innervation

A

Deep fibular n. [L5,S1]

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8
Q

Extensor Hallucis Brevis Action

A

Extends MTP joint of great toe

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9
Q

First Layer Muscles

A

Abductor Hallucis
Flexor Digitorum Brevis
Abductor Digiti Minimi

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10
Q

Abductor Hallucis Proximal Attachment

A

Medial tubercle of the calcaneus

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11
Q

Abductor Hallucis Distal Attachment

A

Medial side of the proximal phalanx of the great toe

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12
Q

Abductor Hallucis Innervation

A

Medial plantar n. [S2,S3]

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13
Q

Abductor Hallucis Action

A

Abducts MTP joint of great toe

Flexes MTP joint of great toe

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14
Q

Flexor Digitorum Brevis Proximal Attachment

A

Medial tubercle of the calcaneus

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15
Q

Flexor Digitorum Brevis Distal Attachment

A

Medial sides of the middle phalanx of digits II-V

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16
Q

Flexor Digitorum Brevis Innervation

A

Medial plantar n. [S2,S3]

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17
Q

Flexor Digitorum Brevis Action

A

Flexes MTP & PIP joints of lateral 4 toes

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18
Q

Abductor Digiti Minimi Proximal Attachment

A

Tuberosity of the calcaneus and plantar aponeurosis

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19
Q

Abductor Digiti Minimi Distal Attachment

A

Lateral side of proximal phalanx of digit V

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20
Q

Abductor Digiti Minimi Innervation

A

Lateral plantar n. [S2,S3]

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21
Q

Abductor Digiti Minimi Action

A

Abducts MTP joint of little toe

Flexes MTP joint of little toe

22
Q

Second Layer Muscles

A

Quadratus Plantae

Lumbricals

23
Q

Quadratus Plantae Proximal Attachment

A

Plantar aspect of the calcaneus

24
Q

Quadratus Plantae Distal Attachment

A

Lateral margin of FDL tendons

25
Q

Quadratus Plantae Innervation

A

Lateral plantar n. {S2,S3]

26
Q

Quadratus Plantae Action

A

Assists FDL in flexing lateral 4 toes

27
Q

Lumbricals Proximal Attachment

A

Tendons of the flexor digitorum longus muscle

28
Q

Lumbricals Distal Attachment

A

Medial side of the proximal phalanx of digits II-V via the extensor hoods

29
Q

Lumbricals Innervation

A

1st: Medial plantar n. [S2,S3]

2nd-4th: Lateral plantar n. [S2,S3]

30
Q

Lumbricals Action

A

Flexes the MTP joints of the lateral 4 toes

Extends the PIP & DIP joints of lateral 4 toes

31
Q

Third Layer Muscles

A

Flexor Hallucis Brevis
Adductor Hallucis
Flexor Digiti Minimi

32
Q

Flexor Hallucis Brevis Proximal Attachment

A

Plantar surface of cuboid and lateral cuneiform

33
Q

Flexor Hallucis Brevis Distal Attachment

A

Both sides of the proximal phalanx of the great toe

34
Q

Flexor Hallucis Brevis Innervation

A

Medial plantar n. [S2,S3]

35
Q

Flexor Hallucis Brevis Action

A

Flexes MTP joint of great toe

36
Q

Adductor Hallucis Proximal Attachment

A

Oblique head: bases of metatarsals II-IV

Transverse head: from ligaments near the heads of metatarsals III-V

37
Q

Adductor Hallucis Distal Attachment

A

Lateral side of the proximal phalanx of the great toe

38
Q

Adductor Hallucis Innervation

A

Lateral plantar n. [S2,S3]

39
Q

Adductor Hallucis Action

A

Adducts MTP joint of great toe

Flexes MTP joint of great toe

40
Q

Flexor Digiti Minimi Proximal Attachment

A

Base of metatarsal V

41
Q

Flexor Digiti Minimi Distal Attachment

A

Lateral side of the proximal phalanx of the little toe

42
Q

Flexor Digiti Minimi Innervation

A

Lateral plantar n. [S2,S3]

43
Q

Flexor Digiti Minimi Action

A

Flexes MTP joint of little toe

44
Q

Fourth Layer Muscles

A

Dorsal Interossei

Plantar Interossei

45
Q

Dorsal Interossei Proximal Attachment

A

Adjacent sides of 2 metatarsals

46
Q

Dorsal Interossei Distal Attachment

A

1st: Medial side of proximal phalanx of digit II

2nd, 3rd, 4th: Lateral sides of proximal phalanx of digits II-IV

47
Q

Dorsal Interossei Innervation

A

Lateral plantar n. [S2,S3]

48
Q

Dorsal Interossei Action

A

Abducts MTP joints of toes 2-4
Flexes MTP joints of toes 2-4
Extends PIP & DIP joints of toes 2-4

49
Q

Plantar Interossei Proximal Attachment

A

Medial sides of MT III-V

50
Q

Plantar Interossei Distal Attachment

A

Medial sides of proximal phalanx of digits III-V

51
Q

Plantar Interossei Innervation

A

Lateral plantar n. [S2,S3]

52
Q

Plantar Interossei Action

A

Adducts MTP joints of toes 3-5
Flexes MTP joints of toes 3-5
Extends PIP & DIP joints of toes 3-5

Gross Anatomy Muscle Attachments (21 decks)

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