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Encyclopedia > Erector spinae
Erector spinae
The relations of the kidneys from behind. (Sacrospinalis visible at bottom left.)
Deep muscles of the back. (Sacrospinalis visible at bottom right.)
Latin m. erector spinae
Gray's subject #115 397
Origin: on the spines of the last four thoracic vertebrae
Insertion: both the spines of the most cranial thoracic vertebrae and the cervical vertebrae
Blood:
Nerve:
Action: extends the vertebral column
Antagonist:
MeSH {{{MeshNumber}}}
Dorlands/Elsevier m_22/12550616

The Erector spinae (or Sacrospinalis in older texts), and its prolongations in the thoracic and cervical regions, lie in the groove on the side of the vertebral column. Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... A typical adult human skeleton consists of the following 206 bones, though a small portion of the human population have an extra bone, occurring in the form of an extra rib. ... A typical thoracic vertebra The thoracic vertebrae (vertebrae thoracales) compose the middle segment of the vertebral column, between the cervical vertebrae and the lumbar vertebrae. ... A typical adult human skeleton consists of the following 206 bones, though a small portion of the human population have an extra bone, occurring in the form of an extra rib. ... A typical thoracic vertebra The thoracic vertebrae (vertebrae thoracales) compose the middle segment of the vertebral column, between the cervical vertebrae and the lumbar vertebrae. ... A cervical vertebra Cervical vertebrae (Vertebrae cervicales) are the smallest of the true vertebrae, and can be readily distinguished from those of the thoracic or lumbar regions by the presence of a foramen (hole) in each transverse process. ... List of human nerves External links List of nerves This is an incomplete list, which may never be able to satisfy certain standards for completeness. ... The vertebral column seen from the side Different regions (curvatures) of the vertebral column The vertebral column (backbone or spine) is a column of vertebrae situated in the dorsal aspect of the abdomen. ... An antagonist is a kind of muscle that act in opposition to the movement generated by the agonists and are responsible for returning a limb to its initial position. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... Elseviers logo Elsevier, the worlds largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. ... The vertebral column seen from the side Different regions (curvatures) of the vertebral column The vertebral column (backbone or spine) is a column of vertebrae situated in the dorsal aspect of the abdomen. ...


They are covered in the lumbar and thoracic regions by the lumbodorsal fascia, and in the cervical region by the nuchal fascia.


This large muscular and tendinous mass varies in size and structure at different parts of the vertebral column. In the sacral region it is narrow and pointed, and at its origin chiefly tendinous in structure.


In the lumbar region it is larger, and forms a thick fleshy mass which, on being followed upward, is subdivided into three columns; these gradually diminish in size as they ascend to be inserted into the vertebræ and ribs.


The Sacrospinalis arises from the anterior surface of a broad and thick tendon, which is attached to the medial crest of the sacrum, to the spinous processes of the lumbar and the eleventh and twelfth thoracic vertebræ, and the supraspinal ligament, to the back part of the inner lip of the iliac crests and to the lateral crests of the sacrum, where it blends with the sacrotuberous and posterior sacroiliac ligaments. Image of pelvis. ...


Some of its fibers are continuous with the fibers of origin of the Glutæus maximus. Gluteus maximus The gluteal muscles are the three muscles that make up the human buttocks. ...


The muscular fibers form a large fleshy mass which splits, in the upper lumbar region into three columns, viz., a lateral, the Iliocostalis, an intermediate, the Longissimus, and a medial, the Spinalis.


Each of these consists from below upward, of three parts, as follows:

Lateral Column Intermediate Column Medial Column
Iliocostalis Longissimus Spinalis
I. lumborum L. dorsi S. dorsi
I. dorsi L. cervicis S. cervicis
I. cervicis L. capitis S. capitis

The iliocostalis is the muscle immediately lateral to the longissimus that is the nearest to the furrow that separates the epaxial muscles from the hypaxial. ...

External link

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. GPnotebook is a British medical database for general practitioners (GPs. ... Loyola University Chicago is a private co-educational religious-affiliated university established in Chicago, Illinois in 1870 as Saint Ignatius College. ... Loyola University Chicago is a private co-educational religious-affiliated university established in Chicago, Illinois in 1870 as Saint Ignatius College. ... Loyola University Chicago is a private co-educational religious-affiliated university established in Chicago, Illinois in 1870 as Saint Ignatius College. ... The State University of New York Health Science Center at Brooklyn, better known as SUNY Downstate Medical Center, is an academic medical center and is the only one of its kind in the Borough of Brooklyn in New York City. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...

Muscles of the Head — Neck — Trunk — Upper limb — Lower limb— LIST OF ALL MUSCLES

BACK: splenius capitis | splenius cervicis | sacrospinalis | semispinalis | multifidus | rotatores | interspinales | intertransversarii | (Gray's s115) A top-down view of skeletal muscle Muscle is contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. ... This is a list of muscles of the human anatomy. ... The human back is the large posterior area of the human body, rising from the top of the buttocks to the back of the neck and the shoulders. ... The Splenius capitis muscle is a muscle of the human body. ... The xxxxx is a muscle of the human body. ... The Sacrospinalis muscle is a muscle of the human body. ... The Semispinalis muscle is a muscle of the human body. ... The Multifidus muscle is a muscle of the human body. ... The Rotatores muscle is a muscle of the human body. ... these muscles sometimes hurt me. ... Intertransversarii muscles The Intertransversarii are small muscles placed between the transverse processes of the vertebræ. In the cervical region they are best developed, consisting of rounded muscular and tendinous fasciculi, and are placed in pairs, passing between the anterior and the posterior tubercles respectively of the transverse processes of two... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


SUBOCCIPITAL : rectus capitis posterior (major, minor) | obliquus capitis (inferior, superior) | (Gray's s116) The first spinal nerve, the suboccipital nerve exits the spinal cord between the skull and the first cervical vertebra, the atlas. ... The Rectus capitis posterior major muscle is a muscle of the human body. ... The Rectus capitis posterior minor muscle is a muscle of the human body. ... In anatomy, the obliquus capitis inferior muscle, the larger of the two oblique muscles, is one of the muscles of the neck. ... It arises from the lateral mass of the atlas bone. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


THORAX: intercostales (externi, interni) | subcostales | transversus thoracis | levatores costarum | serratus posterior (inferior, superior) | diaphragm | (Gray's s117) Diagram of a tsetse fly, showing the head, thorax and abdomen The thorax is a division of an animals body that lies between the head and the abdomen. ... The Intercostales externi muscle is a muscle of the human body. ... The Intercostales interni (Internal intercostals) are eleven in number on either side. ... The Subcostales muscle is a muscle of the human body. ... The tranversus thoracis lies internal to the thoracic cage, anteriorly. ... The Levatores costarum, twelve in number on either side, are small tendinous and fleshy bundles, which arise from the ends of the transverse processes of the seventh cervical and upper eleven thoracic vertebrae; they pass obliquely downward and lateralward, like the fibers of the Intercostales externi, and each is inserted... The Serratus posterior inferior muscle is a muscle of the human body. ... The Serratus posterior superior muscle is a muscle of the human body. ... In the anatomy of mammals, the diaphragm is a shelf of muscle extending across the bottom of the ribcage. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


ABDOMEN: obliques (external, internal) | transversus abdominis | rectus abdominis | pyramidalis | cremaster | quadratus lumborum | (Gray's s118) The human abdomen (from the Latin word meaning belly) is the part of the body between the pelvis and the thorax. ... The Obliquus externus abdominis muscle (or external oblique) is a muscle of the human body. ... The internal oblique is the intermediate muscle of the abdomen, lying just underneath the external oblique and just above (superficial to) the transverse abdominal muscle. ... The transversus abdominis muscle, also known as the transverse abdominal muscle, is a muscle layer of the anterior and lateral abdominal wall which is deep to the internal oblique muscle. ... The rectus abdominis muscle is a paired muscle running vertically on each side of the anterior wall of the human abdomen (and in some animals). ... The pyramidalis is a muscle that is considered insignificant in humans. ... The cremaster muscle is a muscle that covers the testis. ... The Quadratus lumborum muscle is a muscle of the human body. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


PELVIS: levator ani (iliococcygeus, pubococcygeus) | coccygeus | (Gray's s119) Human male pelvis, viewed from front Human female pelvis, viewed from front The pelvis is the bony structure located at the base of the spine (properly known as the caudal end). ... The Levator ani is a broad, thin muscle, situated on the side of the pelvis. ... The Iliococcygeus arises from the ischial spine and from the posterior part of the tendinous arch of the pelvic fascia, and is attached to the coccyx and anococcygeal raphé; it is usually thin, and may fail entirely, or be largely replaced by fibrous tissue. ... Muscles of the lower abdomen. ... The Coccygeus is situated behind the levator ani. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


PERINEUM: corrugator cutis ani | sphincter ani (externus, internus) | transversus perinei superficialis | bulbospongiosus | ischiocavernosus | Transversus perinei profundus sphincter urethrae membranaceae | (Gray's s120) The muscles of the male perineum In anatomy, the perineum is the region between the genital area and the anus in both sexes. ... The Corrugator cutis ani muscle is a muscle of the human body. ... The Sphincter ani externus muscle is a muscle of the human body. ... The Sphincter ani internus muscle is a muscle of the human body. ... The Transversus perinei superficialis muscle is a muscle of the human body. ... Bulbospongiosus is one of the superficial muscles of the perineum. ... The ischiocavernosus muscle is a muscle just below the surface of the perineum, present in both men and women. ... The Transversus perinei profundus muscle is a muscle of the human body. ... The Sphincter urethrae membranaceae muscle is a muscle of the human body. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


  Results from FactBites:
 
21 (1465 words)
erector spinae was analyzed by use of EMG, and the shape of the vertebral column was anayzed by X-ray.
erector spinae in a case of the trunk extension, and this result was discussed in relation to low back pain.
erector spinae relaxed, and from this position, the lumbo-sacral angle did not change further, even if the trunk was flexed more deeply.
  More results at FactBites »

 
 

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