Extensor hallucis longus muscle
| Extensor hallucis longus muscle |
|---|
|
| anterior lower leg muscles of man |
| origin |
| Facies medialis of the fibula , membrana interossea cruris |
| approach |
| Terminal phalanx of the big toe |
| function |
| Dorsiflexion of the big toe |
| Innervation |
| Deep peroneal nerve |
| Spinal segments |
| L5, S1 |
The extensor hallucis longus muscle ( Latin for "long big toe extensor ") is a skeletal muscle of the leg and one of the extensors on the lower leg . In the upper part it is covered by the tibialis anterior and extensor digitorum longus muscles.
In animals, the muscle is also referred to as the extensor digiti longus muscle . In animals with a reduced number of toe rays (e.g. horses , cattle , goats ) it does not occur as an independent muscle.
function
The extensor hallucis longus muscle is responsible for the dorsiflexion (pulling upwards) of the big toe ( hallux ). He is also involved in the dorsiflexion of the foot. Depending on the starting position of the foot, it supports both the inversion and the eversion of the lower ankle joint.
In animals with an independent extensor digiti longus muscle (e.g. predators , pigs , sheep ) this flexes the ankle and stretches the inner toe.
Individual evidence
- ^ A b Franz-Viktor Salomon: muscle tissue . In: Anatomy for veterinary medicine . 2nd ext. Edition. Enke, Stuttgart 2008, ISBN 978-3-8304-1075-1 , pp. 147-234.