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Longissimus is the longest, thickest and most central erector spinae muscle. It is divided into three parts (capitis, cervicis, thoracis) based on their superior attachments and location. The erector spinae muscles, including longissimus, are the most powerful extensors of the vertebral column.
The longissimus (Latin: the longest one) is the muscle lateral to the semispinalis muscles. It is the longest subdivision of the erector spinae muscles that extends forward into the transverse processes of the posterior cervical vertebrae.
The longissimus is a deep muscle of the back. It lies between the iliocostalis and spinalis within the erector spinae complex, and can be divided into three parts – thoracic, cervicis, and capitis.
The longissimus muscle is a long intrinsic muscle of the back and together with spinalis and iliocostalis muscles, comprises the erector spinae group. Longissimus is the longest and thickest muscle of the erector spinae and lies between spinalis and iliocostalis.
⭐ Longissimus Muscle Anatomy ⭐ The longissimus muscle has three sections: the longissimus thoracis, longissimus cervicis, and longissimus capitis. It is also part of the erector spinae...
The longissimus muscle is one of the three groups of muscles which make up the erector spinae lying either side of the spinous processes of the vertebral column, and forming the largest group of intrinsic back muscles.
The longissimus muscles are the central erector spinae muscles. They are also the thickest and the longest. The longissimus muscles are divided into three regional groups, similar to the spinalis muscles. These include, from superior to inferior: