How Do You Spell MUSCULUS ILIOCOSTALIS DORSI?

1. Musculus iliocostalis dorsi, commonly known as the iliocostalis dorsi muscle, is a long and thin muscle that is part of the deep intrinsic back musculature. It extends from the pelvis to the spine and plays a vital role in the movement and support of the vertebral column.

   The iliocostalis dorsi muscle is composed of three distinct parts: the iliocostalis lumborum, iliocostalis thoracis, and iliocostalis cervicis. Each part originates from different areas of the spine and inserts into different regions of the ribs, giving it its segmented appearance.

   The muscle is involved in various movements of the spine, including extension, lateral flexion, and rotation. Additionally, it assists in maintaining the upright posture of the body. By contracting unilaterally or bilaterally, it helps to stabilize the spine during activities such as lifting, bending, and twisting.

   In terms of innervation, the iliocostalis dorsi muscle is primarily supplied by the posterior branches of the spinal nerves. The exact innervation pattern varies depending on the specific region of the muscle.

   Overall, the musculus iliocostalis dorsi is an important muscle involved in the dynamic support and movement of the vertebral column. Dysfunction or injury to this muscle can result in pain, limited range of motion, and postural abnormalities.

2. Origin, inner side of angles of 12th to 7th ribs; insertion, angles of 6th to 1st ribs and transverse processes of 7th cervical vertebra; action, keeps dorsal spine erect; nerve supply, branches of dorsal.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

Common Misspellings for MUSCULUS ILIOCOSTALIS DORSI