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Bassett Collection of Stereoscopic Images of Human Anatomy

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

Superficial structures and external layer of muscles of lumbosacral region of back

Image #212-3

KEYWORDS: Lumbar region, Muscles and tendons, Peripheral nervous system, Sacral region, Thoracic region, Vasculature, Vertebral column.

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Dissection of thoracic and lumbosacral regions of back from a posterior approach
Superficial structures and external layer of muscles of lumbosacral region of back
The lower part of the specimen is shown in view 212-1 is shown in more detail in this close-up photograph.
1 . Lateral cutaneous branch, intercostal nerve VII (posterior branch)
2 . Lateral cutaneous branch of dorsal branch thoracic nerve XI
3 . Superficial fascia
4 . Superior cluneal nerves
5 . Middle cluneal nerves
6 . Coccyx (covered by ligaments)
7 . Middle cutaneous branch of dorsal branch thoracic nerve X
8 . Latissimus dorsi muscle
9 . Thoracolumbar fascia (overlying erector spinae muscle)
10 . External oblique muscle
11 . Lumbar triangle (Petit's triangle)
12 . Iliac crest
13 . Gluteus maximus muscle