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Gross Anatomy II NYCC > Leg > Flashcards

Leg Flashcards

1
Q

What supplies the L4 dermatome?

A

Saphenous nerve

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2
Q

What supplies the S1 dermatome?

A

Sural nerve

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3
Q

What supplies the upper L5 dermatome?

A

Lateral Sural cutaneous nerve

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4
Q

What supplies the lower L5 dermatome on the top of the foot?

A

Superficial fibular nerve

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5
Q

What supplies the portion of L5 dermatome between the first 2 digits?

A

Deep fibular nerve

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6
Q

What supplies the S1 dermatome at the heel/calcaneus?

A

Medial calcaneal branches of tibial nerve

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7
Q

Describe the path of the great saphenous vein as it enters the leg

A

Begins medially at the knee, travels anteromedially towards the foot

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8
Q

The great saphenous vein travels with the ____

A

Saphenous nerve

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9
Q

Name the muscles of the anterior compartment of the leg

A

Fibularis tertius
Extensor digitorum longus
Extensor hallucis longus
Tibialis anterior
(FEET is deep)

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10
Q

What nerve innervates the anterior compartment of the leg?

A

Deep fibular n

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11
Q

What artery supplies the anterior compartment of the leg?

A

Anterior tibial a

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12
Q

What is the action of the muscles in the anterior compartment of the leg?

A

Dorsiflexion

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13
Q

Name the muscles of the lateral compartment of the leg

A

Fibularis longus
Fibularis brevis

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14
Q

What nerve innervates the lateral compartment of the leg?

A

Superficial fibular n

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15
Q

What artery supplies the lateral compartment of the leg?

A

Fibular a

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16
Q

What compartment is the fibular artery located in?

A

Posterior

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17
Q

Name the muscles of the posterior compartment of the leg

A

Superficial:
- gastrocnemius
- soleus
- plantaris

Deep:
- tibialis posterior
- flexor hallicus longus
- flexor digitorum longus
- popliteus

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18
Q

What is the action of the muscles in the lateral compartment of the leg?

A

Eversion

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19
Q

What nerve innervates the posterior compartment of the leg?

A

Tibial n

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20
Q

What artery supplies the posterior compartment of the leg?

A

Posterior tibial a

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21
Q

What is the action of the muscles in the posterior compartment of the leg?

A

Plantar flexion

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22
Q

Origin & insertion of tibialis anterior

A

O: lateral condyle & lateral surface of proximal 1/2 of the tibia, interosseous membrane & crural fascia

I: medial & plantar surfaces of 1st metatarsal and medial cuneiform bone

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23
Q

Innervation of tibialis anterior

A

Deep fibular n

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24
Q

Actions of tibialis anterior

A

Dorsiflexion & inversion

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25
Q

Origin & insertion of extensor hallicus longus

A

O: medial surface of fibula & interosseous membrane and crural fascia
I: dorsal surface of base of distal phalanx of great toe

26
Q

Innervation of extensor hallicus longus

A

Deep fibular n

27
Q

Action of extensor hallucis longus

A

Extension of interphalangeal joint of the hallux

28
Q

Origin & insertion of extensor digitorum longus

A

O: lateral condyle of tibia, fibula and interosseous membrane
I: distal phalanges of lateral 4 digits

29
Q

Innervation of extensor digitorum longus

A

Deep fibular n

30
Q

Action of extensor digitorum longus

A

Dorsiflexion & extension of lateral 4 digits

31
Q

Origin & insertion of fibularis tertius

A

O: distal 1/3 of anterior surface of fibula and interosseous membrane
I: dorsal surface of base of 5th metatarsal

32
Q

Innervation of fibularis tertius

A

Deep fibular n

33
Q

Action of fibularis tertius

A

Weak dorsiflexor; eversion

34
Q

Origin & insertion of fibularis longus

A

O: head & proximal 3/4 of lateral surface of fibula
I: lateral aspect of base of 1st metatarsal & medial cuneiform

35
Q

Innervation of fibularis longus

A

Superficial fibular n

36
Q

Action of fibularis longus

A

Eversion

37
Q

Origin & insertion of fibularis brevis

A

O: distal 1/3 of lateral surface of fibula and intermuscular septum
I: lateral surface of base of 5th metatarsal bone

38
Q

Innervation of fibularis brevis

A

Superficial fibular n

39
Q

Action of fibularis brevis

A

Eversion

40
Q

Origin & insertion of gastrocnemius

A

Origin
- medial: medial condyle of femur
- lateral: lateral condyle of femur

Insertion: calcaneal tuberosity via tendo calcaneus (Achilles tendon)

41
Q

Innervation of gastrocnemius

A

Tibial n

42
Q

Actions of gastrocnemius

A

Plantarflexion; initiates knee flexion

43
Q

Origin & insertion of soleus

A

O: posterior surface of proximal 1/3 of fibula and soleal line and medial border of tibia
I: calcaneal tuberosity via tendo calcaneus with gastrocnemius

44
Q

Innervation of soleus

A

Tibial n

45
Q

Action of soleus

A

Plantarflexion; active in postural support when leg is bearing weight

46
Q

Origin & insertion of plantaris

A

O: lateral epicondyle of femur
I: calcaneal tuberosity along medial edge of tendo calcaneus

47
Q

Innervation of plantaris

A

Tibial n

48
Q

Action of plantaris

A

Very weak plantarflexion

49
Q

The tendon of ____ is often used for surgical repair of other long tendons in the body

A

Plantaris

50
Q

Origin & insertion of flexor digitorum longus

A

O: medially & arises from posterior surface of tibia (below soleal line)
I: distal phalanges of lateral 4 toes

51
Q

Innervation of flexor digitorum longus

A

Tibial n

52
Q

Action of flexor digitorum longus

A

Flex distal interphalangeal joint of lateral 4 toes; assist in plantarflexion & inversion of the foot

53
Q

Origin & insertion of tibialis posterior

A

O: posterior surface of interosseous membrane & medial aspect of tibia
I: tuberosity of navicular, calcaneus, 3 cuneiforms, cuboid, and 2nd-4th metatarsals

54
Q

Innervation of tibialis posterior

A

Tibial n

55
Q

Action of tibialis posterior

A

Inversion, Plantarflexion

56
Q

Origin & insertion of flexor hallicus longus

A

O: lower half of posterior surface of fibula & interosseus membrane
I: base of distal phalanx of great toe

57
Q

Innervation of flexor hallicus longus

A

Tibial n

58
Q

Action of flexor hallicus longus

A

Flex distal phalanx of great toe; Plantarflex ankle; invert foot

59
Q

Origin & insertion of popliteus

A

O: lateral epicondyle of femur
I: posterior surface of tibia, above soleal line

60
Q

Innervation of popliteus

A

Tibial n

61
Q

Actions of popliteus

A

Laterally rotate femur to unlock the knee when tibia is fixed during weight bearing

Gross Anatomy II NYCC (18 decks)

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