Muscles of the anterior and lateral leg Flashcards Preview

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Flashcards in Muscles of the anterior and lateral leg Deck (14):
0

What are the muscles of the anterior compartment of the leg?

- Tibialis anterior
- Extensir hallicus longus
- Extensor digitorum longus
- Fibularis tertius

1

What are the muscles of the lateral compartment of the leg?

- Fibularis longus
- Fibularis brevis

2

What are the origin and insertion of Tibialis anterior?

- Origin: lateral condyle and superior half of lateral surface of tibia

- Insertion: medial and inferior surfaces if medial cuneiform and base of first metatarsal

3

What is the action of Tibialis anterior?

- Dorsiflex foot at ankle
- Inverts foot

4

What are the origin and insertion of EHL?

- Origin: middle part of anterior surface if fibula and interosseous membrane

- Insertion: Dorsal aspect of base of distal phalanx of great toe

5

What is the action of EHL?

- Extends great toe
- Dorsiflexes foot at ankle

6

What are the origin and insertion EDL?

- Origin: lateral condyle of tibia and superior three quarters of anterior surface of interosseous membrane of fibula

- Insertion: Middle and distal phalanges if lateral four digits

7

What is the action of EDL?

- Extends lateral four digits
- Dorsiflexes foot at ankle

8

What are the origin and insertion of Fibularis tertius?

- Origin: inferior third if anterior surface if fibula and interosseous membrane

- Insertion: Dorsum of base of fifth metatarsal

9

What is the action of Fibularis tertius?

- Dorsiflexes foot at ankle
- Aids in eversion of foot

10

What are the origin and insertion of Fibularis longus?

- Origin: head and superior two thirds if lateral surface of tibia

- Insertion: base if first metatarsal and medial cuneiform

11

What is the action of Fibularis longus?

- Everts foot
- Weakly plantarflexes foot at ankle

12

What are the origin and insertion of Fibularis brevis?

- Origin: Head and superior two thirds of lateral surface of fibula

- Insertion: Dorsal surface of tuberosity in lateral side of fifth metatarsal

13

What is the action of Fibularis brevis?

- Everts foot
- weakly plantarflexes foot at ankle