The rotatores (or rotatores spinae muscles, Latin: musculi rotatores) are deep muscles of the back located laterally along the spine. Each muscle extends between the transverse and spinous processes of the vertebrae. The main functions of the rotatores include
stabilizing, rotating, and extending the spine.
What is the action of the multifidus muscle?
| Multifidus muscle | Actions Provides proprioceptive feedback and input due to high muscle spindle density; Bilateral backward extension, unilateral ipsilateral side-bending and contralateral rotation. | Identifiers | Latin Musculus multifidus spinae | TA98 A04.3.02.202 |
|---|
Where are the Rotatores muscles located?
Anatomical terms of muscle
The rotatores muscles (rotatores spinae muscles) lie
beneath the multifidus
and are present in all spinal regions but are most prominent in the thoracic region; they are eleven in number on either side.
What is the action of the Interspinales?
Action:
Extension, flexion and rotation of vertebral column
. Description: In the cervical region, interspinales muscles are most distinct, and consist of six pairs, the first being situated between the axis and third vertebra, and the last between the seventh cervical and the first thoracic.
What muscles are in the Transversospinalis group?
Transversospinales muscle group is a deep group of back muscles that lies deep to the Erector Spinae. It consists of 3 major subgroups:
semispinalis, multifidus and rotatores
.
How do I strengthen my multifidus muscles?
The multifidus walk out
is a great way to strengthen the multifidus in a more functional standing position. Since many daily activities that require spinal stabilization are done in standing, it’s important to train the multifidus in that same upright position. Attach a band to a secure object about chest height level.
How do you train a deep back muscle?
- Lie on one side with the legs together.
- Keep the lower leg slightly bent.
- Draw the bellybutton into the spine to engage the core muscles.
- Raise the top leg about 18 inches, keeping it straight and extended.
- Hold the position for 2 seconds.
- Repeat 10 times.
Which bones are deep to the Ligamentum Nuchae?
Extends from the external occipital protuberance on the skull and median nuchal line, to the spinous process of C7. The deep fibers of the ligament attach to the external occipital crest, the posterior tubercle of
the atlas
, and to the medial surface of the bifid processes of the other cervical vertebrae.
What is a deep back?
The deep back muscles are
posterior to the erector spinae
. They are short muscles associated with the spinous and transverse processes of the vertebrae. The three deep muscles of the back include the semispinalis, multifidus, and rotatores.
What is the function of the longissimus?
The erector spinae muscles, including longissimus, are the most powerful extensors of the vertebral column. Hence their main actions include
spine extension and lateral flexion
. Longissimus capitis also rotates the head.
What is the origin of the Interspinales?
| Interspinales muscles | Details | Origin Spinous process | Insertion Spinous process | Nerve Posterior rami of spinal nerves |
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What is the role of the Intertransverse ligaments?
The intertransverse ligaments are ligaments that are placed between the transverse processes of the spine. In the cervical region they consist of a few irregular, scattered fibers that are often replaced by muscles. … The function of the intertransverse ligaments is
to limit lateral flexion of the spine.
What is the deepest muscle in the lower back?
The intermediate layer contains the
large erector spinae muscles
which are sometimes called the long muscles of the back. This muscle group is the largest of the deep back muscles and lies on either side of the vertebral column between the spinous processes of the vertebrae and the angles of the ribs.
What is the deepest spinal muscle group?
Rotatores
.
The rotatores
are the deepest muscles in the transversospinalis group and have the shortest fascicles, spanning one to two segments. The muscles in this group are the rotatores capitis, rotatores cervicis, and rotatores thoracis. The rotatores thoracis is the most developed in this group.
Is Semispinalis deep to Spinalis?
There are three major muscles in this group – the semispinalis, multifidus and rotatores. The semispinalis is
the most superficial of the deep intrinsic muscles
. Much like the intermediate muscles, it can be divided by its superior attachments into thoracic, cervicis and capitis.
