Search results
Results from the WOW.Com Content Network
The thoracolumbar fascia (lumbodorsal fascia or thoracodorsal fascia) is a complex, [1]: 1137 multilayer arrangement of fascial and aponeurotic layers forming a separation between the paraspinal muscles on one side, and the muscles of the posterior abdominal wall (quadratus lumborum, and psoas major [1]: 1137 ) on the other.
The lumbar fascia gives origin to the latissimus dorsi muscle (which arises from posterior layer of lumbar fascia), [1]: 40 abdominal internal oblique muscle (which arises along the entire length of the lumbar fascia), transversus abdominis muscle, [1]: 222 and gluteus maximus muscle. [1]: 125
The superior band is continuous superiorly with the anterior layer of lumbodorsal fascia. [2] Anterior to the superior band is the psoas major muscle; posterior to it the muscles occupying the vertebral groove; superior to it the quadratus lumborum muscle. [5] [obsolete source]
They are also known as the sacrospinalis group of muscles. These muscles lie on either side of the spinous processes of the vertebrae and extend throughout the lumbar, thoracic, and cervical regions. The erector spinae is covered in the lumbar and thoracic regions by the thoracolumbar fascia, and in the cervical region by the nuchal ligament.
The longissimus thoracis et lumborum is the intermediate and largest of the continuations of the erector spinae.. In the lumbar region (longissimus lumborum), where it is as yet blended with the iliocostalis, some of its fibers are attached to the whole length of the posterior surfaces of the transverse processes and the accessory processes of the lumbar vertebrae, and to the anterior layer of ...
The superior lumbar (Grynfeltt-Lesshaft) triangle is formed medially by the quadratus lumborum, laterally by the posterior border of internal abdominal oblique muscle, and superiorly by the 12th rib. The floor of the superior lumbar triangle is the transversalis fascia and its roof is the external
Inguinal ligament, iliac crest and the lumbodorsal fascia: Insertion: Linea alba, pectineal line of pubis (via conjoint tendon) and ribs 10-12. Artery: Subcostal arteries: Nerve: Thoracoabdominal nn. (T7-T11), subcostal n. (T12), iliohypogastric n. (L1) and ilioinguinal n. (L1) Actions: Bilateral: Compresses abdomen Unilateral: Ipsilateral ...
The lumbar region is sometimes referred to as the lower spine, or as an area of the back in its proximity.. In human anatomy the five lumbar vertebrae (vertebrae in the lumbar region of the back) are the largest and strongest in the movable part of the spinal column, and can be distinguished by the absence of a foramen in the transverse process, and by the absence of facets on the sides of the ...