The group of deep back extensors is called _____.

The group of deep back extensors is known as the erector spinae. This muscle group plays a crucial role in maintaining an upright posture and supporting the spine during movement. Specifically, the erector spinae is responsible for the extension, lateral flexion, and rotation of the vertebral column. It consists of three columns of muscles: the iliocostalis, longissimus, and spinalis, which run parallel to the spine.

Understanding this terminology is important, as these muscles are integral to the biomechanics of the back. They help stabilize the spine and contribute to overall back strength. This group of muscles must be well-functioning for activities such as lifting, twisting, and maintaining proper posture, which are critical in both daily life and chiropractic care.