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Gross Anatomy II NYCC > Leg > Flashcards

Leg Flashcards

(61 cards)

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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
Origin & insertion of extensor hallicus longus
O: medial surface of fibula & interosseous membrane and crural fascia I: dorsal surface of base of distal phalanx of great toe
26
Innervation of extensor hallicus longus
Deep fibular n
27
Action of extensor hallucis longus
Extension of interphalangeal joint of the hallux
28
Origin & insertion of extensor digitorum longus
O: lateral condyle of tibia, fibula and interosseous membrane I: distal phalanges of lateral 4 digits
29
Innervation of extensor digitorum longus
Deep fibular n
30
Action of extensor digitorum longus
Dorsiflexion & extension of lateral 4 digits
31
Origin & insertion of fibularis tertius
O: distal 1/3 of anterior surface of fibula and interosseous membrane I: dorsal surface of base of 5th metatarsal
32
Innervation of fibularis tertius
Deep fibular n
33
Action of fibularis tertius
Weak dorsiflexor; eversion
34
Origin & insertion of fibularis longus
O: head & proximal 3/4 of lateral surface of fibula I: lateral aspect of base of 1st metatarsal & medial cuneiform
35
Innervation of fibularis longus
Superficial fibular n
36
Action of fibularis longus
Eversion
37
Origin & insertion of fibularis brevis
O: distal 1/3 of lateral surface of fibula and intermuscular septum I: lateral surface of base of 5th metatarsal bone
38
Innervation of fibularis brevis
Superficial fibular n
39
Action of fibularis brevis
Eversion
40
Origin & insertion of gastrocnemius
Origin - medial: medial condyle of femur - lateral: lateral condyle of femur Insertion: calcaneal tuberosity via tendo calcaneus (Achilles tendon)
41
Innervation of gastrocnemius
Tibial n
42
Actions of gastrocnemius
Plantarflexion; initiates knee flexion
43
Origin & insertion of soleus
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
Innervation of soleus
Tibial n
45
Action of soleus
Plantarflexion; active in postural support when leg is bearing weight
46
Origin & insertion of plantaris
O: lateral epicondyle of femur I: calcaneal tuberosity along medial edge of tendo calcaneus
47
Innervation of plantaris
Tibial n
48
Action of plantaris
Very weak plantarflexion
49
The tendon of ____ is often used for surgical repair of other long tendons in the body
Plantaris
50
Origin & insertion of flexor digitorum longus
O: medially & arises from posterior surface of tibia (below soleal line) I: distal phalanges of lateral 4 toes
51
Innervation of flexor digitorum longus
Tibial n
52
Action of flexor digitorum longus
Flex distal interphalangeal joint of lateral 4 toes; assist in plantarflexion & inversion of the foot
53
Origin & insertion of tibialis posterior
O: posterior surface of interosseous membrane & medial aspect of tibia I: tuberosity of navicular, calcaneus, 3 cuneiforms, cuboid, and 2nd-4th metatarsals
54
Innervation of tibialis posterior
Tibial n
55
Action of tibialis posterior
Inversion, Plantarflexion
56
Origin & insertion of flexor hallicus longus
O: lower half of posterior surface of fibula & interosseus membrane I: base of distal phalanx of great toe
57
Innervation of flexor hallicus longus
Tibial n
58
Action of flexor hallicus longus
Flex distal phalanx of great toe; Plantarflex ankle; invert foot
59
Origin & insertion of popliteus
O: lateral epicondyle of femur I: posterior surface of tibia, above soleal line
60
Innervation of popliteus
Tibial n
61
Actions of popliteus
Laterally rotate femur to unlock the knee when tibia is fixed during weight bearing

Gross Anatomy II NYCC (18 decks)

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