Erector spinae
Erector Spinae
Erector Spinae (pronunciation: ih-rek-tor spy-nee) is a group of muscles and tendons, which run more or less the length of the spine on the left and the right, from the sacrum or sacral region (the lower back) up to the base of the skull.
Etymology
The term "Erector Spinae" is derived from Latin, where "Erector" means "one who straightens" and "Spinae" refers to the "spine". Thus, the term literally means "one who straightens the spine".
Function
The primary function of the Erector Spinae is to straighten and rotate the back. It is also responsible for the side-to-side movement of the back. The muscles in this group are the chief extensors of the vertebral column and they also aid in the lateral flexion of the vertebral column.
Related Terms
- Vertebral Column: The vertebral column, also known as the backbone or spine, is part of the axial skeleton.
- Sacrum: The sacrum is a large, triangular bone at the base of the spine and at the upper and back part of the pelvic cavity.
- Muscle: A muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell.
- Tendon: A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension.
See Also
External links
- Medical encyclopedia article on Erector spinae
- Wikipedia's article - Erector spinae
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