Where are the erector spinae muscles located and what movement are they responsible for?

The intermediate muscles are the erector spinae. They include the longissimus, iliocostalis, and spinalis muscles. Their attachments subdivide these muscles, and they all have a common tendinous origin. They play a role in the movement of the thoracic cage and flexion of the upper vertebral column and head.

Where do the erector spinae attach?

sacrum
The erector spinae is attached to the medial crest of the sacrum (a slightly raised feature of the sacrum closer towards the midline of the body as opposed to the “lateral” crest which is further away from the midline of the body), to the spinous processes of the lumbar, and the eleventh and twelfth thoracic vertebrae …

What does the erector spinae include?

So, the erector spinae muscles belong to a bigger group of muscles that are all located along the spine. … The erector spinae muscles include: iliocostalis, longissimus, and spinalis. Each of these muscles can be divided into three sections. We have iliocostalis cervicis, iliocostalis thoracis, and iliocostalis lumborum.

What movement 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 are your Erectors?

The erector spine muscles — also referred to as the lumbar erectors, or sacrospinalis muscles — are the largest stabilizing muscles of your back. … They attach along your spinal column, allowing you to extend, twist, and bend your body.

How do I train my erector spinae?

The superman trains the erector spinae as an extensor by having you lift your legs and arms off of the ground by flexing your lower back and then holding this position. Your lower back will have to work to initiate the movement and stabilize to hold the top position isometrically.

How do you palpate erector spinae?

Is the erector spinae part of the core?

Strong core muscles are important in supporting and stabilizing the spine. … Back extensor muscles- anatomically known as erector spinae or spinal erectors, these muscles start at the base of the skull and run all the way down to the tailbone. Obliques – the muscles along the side of your body.

How do you test for erector spinae?

Where is spinous process located?

vertebra
Spinous process is a bony projection off the posterior (back) of each vertebra. The spinous process protrudes where the laminae of the vertebral arch join and provides the point of attachment for muscles and ligaments of the spine.

Where is lumbar 4?

The L4 spinous process is typically larger than the L5 process. To double check place your hands on the iliac crests with your thumbs pointing towards one another which will put you in the region of L4. Count up from L4 to identify L1. Alternatively you could identify T12.

Where is the S1 vertebrae located?

The L5-S1 disc at the bottom of the spine lies between the L5 vertebra and the first bony segment at the top of the sacrum, which is sacral segment 1 (or S1).

Where are Pedicles located?

Pedicles. Each vertebra has two cylinder-shaped projections (pedicles) of hard bone that stick out from the back part of the vertebral body, providing side protection for the spinal cord and nerves. The pedicles also serve as a bridge, joining the front and back parts of the vertebra.

Where is the lamina groove located?

Posterior iliac crest The lamina groove is a furrow on either side of the spine. It marks the medial edge of the erector spinae group of muscles.

Where is the T8 vertebra located?

thoracic vertebrae
The T4 – T8 vertebrae are located between the T3 and T9 vertebrae and help to make up the thoracic vertebrae column. The thoracic vertebrae region slopes inward between the cervical and lumbar vertebrae regions. The T8 vertebrae can be located in the middle of this inward slope.

What is pedicle anatomy?

Spine Anatomy Overview Video. The pedicle is a stub of bone that connects the lamina to the vertebral body to form the vertebral arch. Two short, stout processes extend from the sides of the vertebral body and joins with broad flat plates of bone (laminae) to form a hollow archway that protects the spinal cord.

Where is the pedicle located on the vertebrae?

Pedicle. The pedicle is a short projection of bone that comes directly off the back of the vertebral body. The pedicle lies between the back of the vertebral body and the transverse process. There are two pedicles per vertebra, one on each side.

Where is the pars interarticularis located?

Pars interarticularis refers to a small segment of bone that joins the facet joints in the back of the spine.