Which muscles are prime movers for lateral flexion of the lumbar spine?

What muscles are responsible for flexing the lumbar spine?

These muscles include the large paired muscles in the lower back, called erector spinae, which help hold up the spine, and gluteal muscles. The flexor muscles are attached to the front of the spine and enable flexing, bending forward, lifting, and arching the lower back.

What is the prime mover muscle of flexion of the vertebral column?

The erector spinae group forms the majority of the muscle mass of the back and it is the primary extensor of the vertebral column. It controls flexion, lateral flexion, and rotation of the vertebral column, and maintains the lumbar curve.

Are Spinalis muscles prime movers of back extension?

When you contract both the right and left sets of your erector spinae muscles, you end up bending both sides of your spine simultaneously. This is called bilateral flexion and the outcome is spinal extension. … Collaboratively, the erector spinae group are the primary movers of back extension.

What muscles can cause lumbar extension?

Lumbar extensors are mainly composed of the erector spinae and multifidus muscle groups, and work cooperatively with gluteal and hamstring muscles during trunk extension (Graves et al., 1994).

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What is the prime mover for trunk rotation?

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.

What is lateral flexion of the lumbar spine?

Movement of a body part to the side is called lateral flexion. This type of movement is commonly associated with the neck and spine. For example, when you move your head toward one of your shoulders or bend your body sideways, you’re performing a lateral flexion.

Are back muscles connected to abdominal muscles?

The abdominal muscles support the trunk, allow movement and hold organs in place by regulating internal abdominal pressure. The deep abdominal muscles, together with muscles in the back, make up your ‘core’ muscles and help keep your body stable and balanced, and protects your spine.