Bassett Collection of Stereoscopic Images of Human Anatomy

Collection Home

KEYWORDS: Lumbar region, Muscles and tendons, Sacral region, Thoracic region, Vertebral column.

Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

Dissection of thoracic and lumbosacral regions of back from a posterior approach

Rotator, interspinal and intertransverse muscles in lumbar region

The erector spinae and multifidus muscles have been nearly completely excised from the lumbar region.

1 .	Medial intertransverse muscle
2 .	Lateral intertransverse muscle (several fascicles present)
3 .	Dorsal branch thoracic nerve XII
4 .	Rib XII
5 .	Aponeurosis transversus abdominis muscle
6 .	Thoracolumbar fascia (upper pointer, middle layer; lower pointer, posterior layer, cut off)
7 .	Transversus abdominis muscle
8 .	Quadratus lumborum muscle (covered by thoracolumbar fascia)
9 .	Upper pointer: Longissimus muscle Lower pointer: Iliocostalis lumborum muscle
10 .	Iliac crest
11 .	Superior cluneal nerves
12 .	Gluteus medius muscle
13 .	Gluteus maximus muscle
14 .	Posterior superior iliac spine
15 .	Spinous process vertebra L. II
16 .	Intervertebral joint capsule
17 .	Interspinalis lumborum muscle
18 .	Transverse process of vertebra L. IV
19 .	Thoracolumbar fascia (posterior layer)
20 .	Rotator muscles
21 .	Spinous process vertebra L. V
22 .	Upper pointer: Lamina (arch of vertebra) L. V Lower pointer: Intervertebral joint capsule L. V - S. I
23 .	Arch sacrum