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Anatomy 5 > Lecture 49+50: Dorsal and Plantar Foot > Flashcards

Lecture 49+50: Dorsal and Plantar Foot Flashcards

1
Q

the sesamoid bones are located in the tedons of what muscle?

A

flexor hallicus brevis

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2
Q

hind foot =

A

calcaneus and talus

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3
Q

mid foot =

A

cubioid, navicular, and cuneiforms

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4
Q

forefoot =

A

phalanges and metatarsals

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5
Q

ball of foot =

A

sesamoid of 1st metatarsal and head of 2nd metatarsal

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6
Q

where does the superomedial limb of the inferior extensor retinaculum attach? inferomedial limb?

A
  • anterior sufrace of the medial malleolus

- blending with plantar fascia

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7
Q

cutaneous innervation to medial side of the foot as far as the 1st metatarsal

A

saphenous n.

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8
Q

continuation of the sural nerve into the foot

A

lateral dorsal cutaneous n.

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9
Q

gives rise to the medial and intermediate dorsal cutaneous nerves

A

superficial peroneal n.

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10
Q

supplies the middle part of the dorsum of the foot

A

superficial peroneal n.

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11
Q

supplies the skin between the 1st and 2nd toes

A

deep peroneal n.

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12
Q

only intrinsic muscle of the dorsum of the foot

A

extensor digitorum brevis

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13
Q

nerve to extensor digitorum brevis

A

deep peroneal n.

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14
Q

funtion of extensor digitorum brevis

A

extends toes 2-4

NOT 5 and NOT 1

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15
Q

origin of the extensor digitorum brevis

A

calcaneus

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16
Q

part of extensor digitorum brevis that goes to the first toe

A

extensor hallucis brevis

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17
Q

what are the terminal branches of the dorsalis pedis a.?

A

deep plantar artery and first dorsal metatarsal a.

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18
Q

the arcuate a. is a branch off of the …

A

dorsalis pedis a.

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19
Q

the arcuate a. gives rise to 3 _____________ which each gives rise to 2 _______________

A

3 dorsal metatarsal arteries

2 dorsal digital arteries

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20
Q

what connects the dorsal metatarsal arteries with the deep plantar arch?

A

perforating arteries

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21
Q
  • goes to the plantar side and joins with the deep plantar arch of the lateral plantar a.
  • terminal branch of the dorsalis pedis a.
A

deep plantar a.

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22
Q

gives rise to three dorsal digital arteries

A

first dorsal metatarsal artery

- this is the second terminal branch of dorsalis pedis

23
Q

what veins contribute to the dorsal venous arch?

A

(4) dorsal metatarsal veins and the dorsal digital veins

there are alos the medial dorsal digital vein of the 1st toe and the lateral dorsal digital vein of the 5th toe which do not connect to the arch

24
Q

where does the medial marginal vein drain?

A

great saphenous vein

25
Q

where does the lateral marginal vein drain?

A

small saphenous vein

26
Q

what is the continuation of the sural nerve on the plantar surface of the foot?

A

lateral dorsal cutaneous nerve

27
Q

what area of the skin does the saphenous nerve innervate?

A

center of medial edge

28
Q

supply the heel area?

A

calcaneal branches of the tibial n.

29
Q

supplies medial 3.5 digits

A

medial plantar n.

30
Q

supplies lateral 1.5 digits

A

lateral plantar n.

31
Q

what tendons are located under the flexor retinaculum and what is their order high to low?

A

Tom: tibialis posterior
Dick: flexor digitorum longus
Harry: flexor hallicus longus

32
Q

muscles in the first layer of the plantar foot (3)

A

abductor hallicus
flexor digitorum brevis
abductor digiti minimi

33
Q

muscles/tendons in the second layer of the plantar foot (4)

A 
flexor digitorum longus tendon
flexor hallucis longus tendon
quadratus plantae
lumbrical muscles (4)
34
Q

action of the lumbricales

A

Flex the proximal phalanges on the metatarsals and extend the 2 distal phalanges of the 2nd to 5th toes

35
Q

action of quadratus plantae

A

Assists with flexion of the small toes by correcting the oblique vector of the flexor digitorum longus tendon as it crosses the plantar surface of the foot.

36
Q

muscles of the third layer of the plantar foot (3)

A

flexor digiti minimi brevis
adductor hallucis (oblique and transverse head)
flexor hallicus brevis

37
Q

muscles/tendons of the 4th layer of the plantar foot (4)

A

peroneus longus tendon
tibialis posterior tendon
plantar inteossei muscles (3)
dorsal interossei muscles (4)

38
Q

function of the plantar interossei muscles

A

adduction of toes

39
Q

fucntion of the dorsal interossei muscles

A

abduction of toes

40
Q

True or false: no matter which way you move the 2nd toe it is abduction

A

True

41
Q

supplies sensory innervation to the heal

A

medial calcaneal n.

a branch of the tibial n.

42
Q

located between the 1st and 2nd layer of foot
passes deep to the abductor hallucis brevis
branch of the tibial n.

A

medial plantar n.

43
Q

divides into three common plantar digital n. which each divide into two proper plantar digital n.

A

medial plantar n.

44
Q

medial plantar n. supplies motor branches to (4)

A
  • abductor hallicus
  • flexor digitorum brevis
  • flexor hallucis brevis
  • 1st lumbrical
45
Q

lateral plantar n. supplies motor branches to everything BUT …

A
  • abductor hallicus
  • flexor digitorum brevis
  • flexor hallucis brevis
  • 1st lumbrical
46
Q

sensory to the lateral margin of the foot and the lateral side of the 5th toe

A

sural n.

47
Q

sensory to the medial side of the foot is a branch of what nerve?

A

femoral n.

saphenous n. supplies medial side of foot and is a branch of the femoral n.

48
Q

arteries of the sole of the foot are a branch from what?

A

posterior tibial a. which branches into the medial plantar artery and the lateral plantar artery

49
Q

blood supply to the medial side of great toe

A

medial plantar artery via the first proper lantar digital artery

50
Q

runs obliquesly across the foot to lateral side blood supply

A

lateral plantar artery ( branch of posterior tibial artery)

51
Q

on the medial side the lateral plantar artery joins with the ____________________- to compete the deep plantar arch

A

deep plantar branch of the dorsalis pedis

52
Q

the deep plantar arch provides ___- plantar metatarsal a.

A

four

53
Q

each plantar metatarsal artery divides into two___________________- that supply adjacent sides of each toe

A

proper plantar digital arteries

54
Q

what is usually a terminal branch of the lateral plantar artery

A

the 10th proper plantar digital a.

Anatomy 5 (6 decks)

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