Dissection of thoracic and lumbosacral regions of back from a posterior approach
Erector spinae muscle, close-up view of thoracic portion
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Image #213-3
Dissection of thoracic and lumbosacral regions of back from a posterior approach
Erector spinae muscle, close-up view of thoracic portion
In this close-up view of the upper part of the specimen shown in the preceding photograph of the iliocostalis (12), longissimus (13) and spinalis (14) divisions of the erector spinae are more clearly visible.
1
.
Rib V
2
.
Fascia of serratus anterior muscle
3
.
Serratus anterior muscle
4
.
Lateral cutaneous branch of dorsal branch thoracic nerve IX
5
.
Serratus posterior inferior muscle (insertion into ninth rib)
6
.
Scapula
7
.
Serratus posterior superior muscle (reflected laterally)
8
.
Iliocostalis cervicis muscle
9
.
Spinous process vertebra Th. II
10
.
Trapezius muscle
11
.
Middle cutaneous branch of dorsal branch .thoracic nerve III