What is the longissimus?
Longissimus. The longissimus muscle is a long intrinsic muscle of the back. Along with spinalis and iliocostalis, these three muscles comprise the erector spinae group. Longissimus is the longest, thickest and most central erector spinae muscle.
What is longissimus muscle area?
The longissimus muscle is a deep muscle of the back that spans the entire length of the vertebral column. It assumes a central position within the erector spinae group, in between the spinalis and iliocostalis muscles.
What is the function of the longissimus column?
Since the longissimus muscle runs up the nearly entire length of the spinal column, it functions to move both the back and the neck. These movements include: Neck extension: bending the neck backwards, such as when you look directly above your head.
Where is the longissimus dorsi located?
The longissimus dorsi is dorsal to the transverse processes of the lumbar vertebrae, and it is dorsal to the ribs in the thoracic region. For most of the length of the ribcage, there are no major muscles immediately ventral to the heads of the ribs.
What causes longissimus muscle pain?
Mechanical neck pain caused by joint dysfunction affects several neck and back muscles, including the longissimus capitis. Muscles often tighten up, but sometimes they become very loose. The changes in the muscles put more stress on the joints and cause the issue to worsen over time.
Which way does the longissimus capitis turn the face?
General information. Longissimus capitis is the part of the longest muscle of the neck, which serves to rotate the head from side to side and extend the head.
What is the action of longissimus thoracis?
Actions of the Longissimus Thoracis Muscle: Extension of the vertebral column. laterally flexes vertebral column to the same side.
Which of the following innervation is found in iliocostalis longissimus and spinalis?
Iliocostalis muscle is innervated by the lateral branches of posterior rami of cervical, thoracic and lumbar spinal nerves.
What causes pain in Splenius capitis?
The onset of pain is often caused by motor vehicular trauma, blunt trauma, falls, and, in particular, postural situations where superior and inferior lateral oblique movements of the head on the neck occur.
What is the function of the longissimus?
Generally speaking, longissimus muscle is a powerful extensor of the vertebral column. However, its exact function depends on the degree of engagement of the different muscle parts. Bilateral contraction of the entire muscle results in extension of the lumbar, thoracic and cervical spine, along with extension of the head and neck.
Where is longissimus located in the spine?
Longissimus is located deep to the splenius capitis, splenius colli, iliocostalis thoracis, iliocostalis lumborum muscles, and erector spinae aponeurosis.
What is longissimus thoracis composed of?
Longissimus thoracis is divided into a lumbar and thoracic portion, each one having its own set of origins and insertions: Lumbar portion – is usually composed of 5 fascicles, most of which originate from the lumbar intermuscular aponeurosis which is attached to the medial end of the iliac crest.
What is the attachment pattern of the longissimus muscle?
Despite being seemingly different, these parts of the longissimus muscle follow a typical pattern of attachment in which they originate at the transverse elements, and insert into the costal elements of a given vertebral segment.