We will be closed on Saturday July 20 due to facilities work.

Bassett Collection of Stereoscopic Images of Human Anatomy

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

Erector spinae muscle, close-up view of lumbosacral portion

Image #213-4

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

Creative Commons

Stanford holds the copyright to the David L. Bassett anatomical images and has assigned Creative Commons license Attribution-Share Alike 4.0 International to all of the images.

Creative Commons License logo

For additional information regarding use and permissions, please contact Dr. Drew Bourn at dbourn@stanford.edu.

Dissection of thoracic and lumbosacral regions of back from a posterior approach
Erector spinae muscle, close-up view of lumbosacral portion
The posterior layer of thoracolumbar fascia (9)has been cut away on the left to reveal the erector spinae muscle.
1 . Iliocostalis lumborum muscle (insertion)
2 . Longissimus thoracis muscle
3 . Spinalis thoracis muscle
4 . Serratus posterior inferior muscle (cut off near insertion into tenth rib)
5 . Lateral cutaneous branch of dorsal branch thoracic nerve X
6 . Rib XII
7 . Internal oblique muscle (reflected anteriorly)
8 . Transverse abdominis muscle (aponeurosis of origin)
9 . Thoracolumbar fascia (cut across)
10 . Erector spinae muscle
11 . Superior cluneal nerves
12 . Latissimus dorsi muscle
13 . Thoracolumbar fascia (posterior layer)
14 . External oblique muscle
15 . Lumbar triangle (Petit's)
16 . Iliac crest
17 . Gluteus medius muscle
18 . Gluteus maximus muscle