What is the main function of the erector spinae muscle?
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What is the main function of the erector spinae muscle?
The erector spinae muscles lie on each side of the vertebral column and extend alongside the lumbar, thoracic, and cervical sections of the spine. The erector spinae muscles function to straighten the back and provide for side-to-side rotation.
What happens when the erector spinae muscle contracts?
As a result of its attachments, the thoracic erector spinae muscle acts over the lumbar spine, but not via direct attachments to it. Contraction of the muscle moves the thorax posteriorly over the lumbar spine, resulting in an extension moment to the lumbar region and a compressive load to the lumbar segments.
What actions does the erector spinae perform?
The function of the spinal erectors is to move the vertebral column. Bilateral contraction of these muscles extends the spine, while unilateral contraction causes lateral flexion (ipsilateral). They also help to maintain posture by steadying the spine on the pelvis during walking.
What is the action of the erector spinae muscle quizlet?
The erector spinae muscles collectively are used to maintain posture and to stand erect.
What is the origin insertion and action of the erector spinae?
Longissimus Muscle
| Muscle | Origin | Insertion |
|---|---|---|
| Longissimus cervicis | Transverse processes of vertebrae T1-T5 | Transverse processes of vertebrae C2-C6 |
| Longissimus thoracis | L1-L5 vertebrae; Sacrum; Posterior iliac crest; Ilium | Transverse process of vertebrae T1-L5; Lower 6 ribs |
What is the origin of the erector spinae muscle?
Erector spinae muscles
| Erector spinae | |
|---|---|
| Origin | Spinous processes of T9-T12 thoracic vertebrae, medial slope of the dorsal segment of iliac crest |
| Insertion | spinous processes of T1 and T2 thoracic vertebrae and the cervical vertebrae |
| Artery | lateral sacral artery |
| Nerve | posterior branch of spinal nerve |
Why do Erectors get tight?
The most common causes for these symptoms are inflammation, muscle strain, and muscle tear. Additionally, these muscles become tight if you live a sedentary lifestyle and your spinae erector muscles do the work to make up for weak abs, lats, and glutes.
How can I strengthen my erector muscles?
Erector Spinae Strengthening Exercises
- Bird Dog. The bird dog exercise not only tones the erector spinae but also builds strength throughout your core.
- Prone Superman. The prone superman strengthens muscles along your spine.
- Standing Superman. This erector spinae exercise also helps improve your balance.
- Deadlift.
Can weak erector spinae cause back pain?
Poor posture results in the muscles of your head and neck being pulled forward and out of alignment. which leads to lengthening the erectors. Weakening of the erector spinae muscles contributes to lower back pain and tightness. That is why you may feel the need to “stretch” your back.
