Topography
Sections pp. 29, 35
Muscles of the back, sections
Lig longitudinale
anterius
Ren
M psoas major
Plexus lumbalis
Proc costaiis
M quadratus
lumborum
Costa XII
M obliquus externus
abdominis
M latissimus dorsi
Proc, spinosus
Cauda equina
Pediculus
arcus
vertebrae
Lamina arcus
vertebrae
Mm.
transversospinales
1
Arcus
vertebrae
M. erector spinae *
(Lamina
>
profunda)
Fascia
thoracolumbalis
(Lamina
superficialis)
Fig. 798
Muscles of the back, Mm. dorsi;
cross-section at the level of the second lumbar vertebra;
inferior view.
The deep (autochthonous) muscles of the back lie within an osteofibrous
tube formed by dorsal parts of the vertebrae and the surrounding
aponeurotic thoracolumbar fascia. The muscles are divided into a lateral *
and a medial ** tract
Foramen intervertébrale
Proc, articularis superior
Articulatio zygapophysialis
Proc, articularis inferior
Proc spinosus
Fascia thoracolumbalis
Aorta
Corpus vertebrae
Nucleus pulposus^
I
Discus
[ intervertebraiis
Anulus fibrosus
)
N spinalis
M psoas major
Cauda equina
Lig. flavum *
M. erector spinae
Mm transversospinales
Fig. 799
Muscles of the back, Mm. dorsi;
computed tomographic cross-section (CT) at the level of the
intervertebral disc between the third and the fourth lumbar
vertebra;
inferior view.
* Calcification or ossification frequently occurs at the sites of insertion
of the tigamenta flava, even in younger individuals.
** Adipose tissue deposits
