Transversospinales

Transversospinales (pronunciation: trans-ver-so-spin-a-les) is a group of muscles located in the deep layer of the intrinsic back muscles. They are responsible for the movement and stabilization of the spine.

Etymology

The term "Transversospinales" is derived from Latin, where "transversus" means across and "spinales" refers to the spine. Thus, the term literally means "across the spine".

Anatomy

The Transversospinales muscle group consists of three muscles:

Semispinalis: This muscle extends from the transverse process of a vertebra to the spinous process of the vertebrae above it. It helps in the extension and rotation of the vertebral column.

Multifidus: This muscle is the thickest and most medial part of the Transversospinales. It helps in the stabilization of the joints at each segmental level.

Rotatores: These are small muscles that run from the transverse process of one vertebra to the spinous process of the next vertebra. They assist in the rotation of the vertebral column.

Function

The Transversospinales muscles play a crucial role in maintaining posture and performing movements of the vertebral column such as extension, flexion, and rotation. They also provide proprioceptive information to the central nervous system.

Related Terms

Vertebral column: The series of vertebrae that extends from the skull to the tailbone, providing support for the body and protecting the spinal cord.

Intrinsic back muscles: These are the deep muscles of the back that are responsible for the movement of the vertebral column.

Spinal cord: The part of the central nervous system that is enclosed within the vertebral column.

Proprioception: The sense of the relative position of one's own parts of the body and the strength of effort being employed in movement.

External links

Medical encyclopedia article on Transversospinales
Wikipedia's article - Transversospinales

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Transversospinales