What muscle causes flexion of the spine?

What muscles are involved in lateral flexion of the spine?

Lateral flexion is side bending in the frontal/ coronal plane. The quadratus lumborum, oblique abdominals, and erector spinae are considered the primary lateral flexors. Note that the internal and external obliques on the same side work to produce the same motion.

What muscles flex the lumbar?

Spinal Muscles: A Comprehensive Guide

Psoas Major Flexes thigh at hip joint & vertebral column
Intertransversarii Lateralis Lateral flexion of vertebral column
Quadratus Lumborum Lateral flexion of vertebral column
Interspinales Extends vertebral column

What are 3 muscles of the back?

The three deep muscles of the back include the semispinalis, multifidus, and rotatores. These muscles stabilize the vertebral column and also have a role in proprioception and balance. Moreover, these muscles help with the movements of the vertebral column and maintain posture.

What is flexion of spine?

Flexion is the anatomical name for forward bending. When treating back pain, many spine specialists encourage exercises to strengthen the muscles that act to bring the spine into flexion. In the lower back, approximately 50% of flexion occurs at the hips, and 50% occurs at the lower spine.

Which muscle is the prime mover in spine trunk flexion?

During axial rotation, contralateral external oblique and ipsilateral internal oblique abdominal muscles are the prime movers, while the ipsilateral external and contralateral internal oblique acted as antagonists.

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Which spinal nerves affect which parts of the body?

The nerves of the cervical spine go to the upper chest and arms. The nerves in your thoracic spine go to your chest and abdomen. The nerves of the lumbar spine then reach to your legs, bowel, and bladder. These nerves coordinate and control all the body’s organs and parts, and let you control your muscles.

What muscles attach c2?


  • attached to the anterior surface of the vertebral body. longus colli.
  • attached to transverse processes. levator scapulae. scalenus medius. splenius cervicis.
  • attached to spinous processes. semispinalis cervicis. rectus capitis posterior major. …
  • attached to posterior surface of lamina. multifidus and longissimus.

What muscles are along the spine?

You have two of each muscle, located on either side of your spine.

  • Iliocostalis muscles. The iliocostalis muscles are those farthest away from your spine. …
  • Longissimus muscles. The longissimus muscles help you arch your back and neck. …
  • Spinalis muscles. The spinalis muscles are closest to your spine.