Soleus muscle
| Soleus muscle |
|---|
|
| Human calf muscles |
| origin |
| Rear surfaces of the tibia (Linea musculi solei) and fibula |
| approach |
| Posterior surface of the calcaneus (tuber calcanei) over the Achilles tendon |
| function |
| Plantar flexion |
| Innervation |
| Tibial nerve |
| Spinal segments |
| L5, S1 |
The soleus muscle ( Latin for "clod muscle ") is a skeletal muscle of the lower extremity , more precisely of the lower leg . It works closely with the calf muscle ( gastrocnemius muscle ) , they are synergists in the effects on the ankle joint and are also summarized as the triceps surae muscle . Nevertheless, it is a muscle in its own right. Most of the clod muscle is covered by the calf muscle.
Comparative anatomy
The soleus muscle shows considerable species differences. It is absent in dogs , but poorly developed in horses. In many species the muscle is simply pinnate .
In humans, the soleus and gastrocnemius muscles are relatively clearly separated from each other. Here the soleus muscle is a complex, multi-feathered muscle that usually has an aponeurosis that is separate from the gastrocnemius muscle. The majority of the muscle's fibers come from both sides of the anterior aponeurosis and are connected to the tibia and fibula. Other fibers come from the back of the head and the upper quarter of the fibula, as well as the middle third of the inner surface of the tibia.
function
The soleus muscle pulls the foot down ( plantar flexion ), which means that the person stands on their toes (when walking, running and jumping). It is also responsible for the supination of the foot.
See also
Individual evidence
- ↑ Franz-Viktor Salomon et al. (Ed.): Anatomy for veterinary medicine. Enke Stuttgart. 3rd ext. Edition 2015, ISBN 978-3-8304-1288-5 , p. 245.
- ^ Ron A. Meyers, John W. Hermanson: Horse Soleus Muscle: Postural Sensor or Vestigial Structure? . In: The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology . 288, No. 10, 2006, pp. 1068-1076. doi : 10.1002 / ar.a.20377 . PMID 16952170 .
- ^ Anne M. Agur et al .: Documentation and Three-Dimensional Modeling of Human Soleus Muscle Architecture . In: Clinical Anatomy . Volume 16, No. 4, 2003, pp. 285-293. PMID 12794910
- ↑ JA Hodgson et al .: Influence of structure on the tissue dynamics of the human soleus muscle observed in MRI studies during isometric contractions. In: J Morphol. Volume 267, No. 5, 2006, pp. 584-601. PMID 16453292 , doi : 10.1002 / jmor.10421