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Anatomy > Exam II Lecture III > Flashcards

Exam II Lecture III Flashcards

1
Q

Blood supply to dorsum of foot

A

Anterior tibial artery via dorsalis pedis artery
Arcuate artery- to dorsal digitals
Deep plantar artery

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2
Q

Muscles of dorsum of foot

A

Extensor digitorum brevis
Extensor hallucis brevis
Dorsal interossei- Abductors

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3
Q

Superficial peroneal nerve

A

Supplies dorsum

Gives rise to medial/intermediate dorsal cutaneous nerves

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4
Q

Deep peroneal nerve

A

Supplies dorsum
Lateral branch is motor to EHB and EDB
Medial branch is cutaneous

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5
Q

Sural nerve gives off

A

Lateral dorsal cutaneous nerve

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6
Q

Superior/inferior peroneal retinacula

A

Tendons of peroneus longus and brevis pass through both of these retinacula

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7
Q

Blood supply to sole of foot

A

Posterior tibial artery–>medial/lateral plantar arteries

Perforating arteries

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8
Q

Cutaneous nerve supply to sole

A

Tibial nerve–> Medial calcaneal, medial/lateral plantar
Saphenous nerve
Sural nerve

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9
Q

Motor nerve supply to sole

A

Tibial nerve via lateral/medial plantar nerves

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10
Q

Superficial muscle layers in sole

A

Skin

Plantar aponeurosis

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11
Q

First muscle layer in sole

A

Abductor hallucis
Flexor digitorum brevis
Abductor digit minimi

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12
Q

Tendons in first layer in sole

A

Flexor digitorum longus

Flexor hallucis longus

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13
Q

Second muscle layer in sole

A

Quadratus plantae

Lumbricals

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14
Q

Third muscle layer in sole

A

Flexor hallucis longus tendon
Adductor hallucis
Flexor digiti minimi brevis

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15
Q

Fourth muscle layer in sole

A 
Peroneus longus tendon
Tibialis posterior tendon
Interossei
-three plantar adductors
-four dorsal abductors
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16
Q

Origin of muscles in first layer

A

Calcaneal tuberosity

17
Q

Innervation of first layer muscles

A

Medial plantar nerve for AbH, FDB

Lateral plantar nerve for ADM (abductor digiti minimi)

18
Q

Abductor hallucis insertion/action

A

Medial sesamoid and base of proximal phalanx big toe

Abducts great toe at MP, helps flex MP

19
Q

Flexor digitorum brevis insertion/action

A

Sides of middle phalanges of digits 2-5

Flexes PIP joints of digits 2-5

20
Q

Quadratus plantae origin/insertion

A

Medial head-medial/plantar surface of calcaneus
Lateral head-lateral/plantar surface of calcaneus
Ins- lateral edge of tendon of flexor digitorum longus

21
Q

Action/innervation of quadratus plantae

A

Help flex DIP joints of digits 2-5

Lateral plantar nerve

22
Q

Lumbricals origin/insertion

A

First lumbrical from long tendon of second digit
Three lateral lumbricals from b/w the adjacent long flexor tendons
-Joins extensor tendons on medial side of proximal phalanges 2-5

23
Q

Lumbricals action

A

Flexes MP joints, extends PIP/DIP joints of digits 2-5

24
Q

Lumbricals 2-4 innervation

A

Lateral plantar nerve

25
Q

Lumbrical 1 innervation

A

Medial plantar nerve

26
Q

Flexor hallucis brevis origin/insertion

A

O- Plantar surfaces of cuboid and lateral cuneiforms

I- Both sides of base of proximal phalanx of first digit

27
Q

Flexor hallucis brevis action/innervation

A

Flexes proximal phalanx of first digit

Medial plantar nerve

28
Q

Adductor hallucis insertion/action/innervation

A

I- base of proximal phalanx of great toe
Adducts the great toe at MP joint
Lateral plantar nerve

29
Q

Flexor digiti minimi origin/insertion

A

O- Sheath of peroneus longus and base of 5th metatarsal

I-Base of proximal phalanx of little toe

30
Q

Flexor digiti minimi action/innervation

A

Flexes PIP joint of little toe

Lateral plantar nerve

31
Q

Dorsal interossei origin/insertion

A

O-Adjacent sides of shafts of metatarsals 1-5

I- Medial side of proximal phalanx digit 2, lateral sides of proximal phalanx of digits 2-4

32
Q

Dorsal interossei action/innervation

A

Abducts digits 2-4 , flex metatarsal phalangeal joints

Lateral plantar nerve

33
Q

Plantar interossei origin/insertion

A

O-Each head arises from medial side of metatarsus 3-5 and sheath of peroneus longus
I- Medial side of base of proximal phalanx of same digit

34
Q

Plantar interossei action/innervation

A

Adducts digits 3-5 at MP joint toward second toe
Flexes MP joint and extends PIP DIP joints of 3-5
Lateral plantar nerve

Anatomy (34 decks)

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