Cat: dissection of lumbar epaxial muscles, head to the left: In the lumbar region, the iliocostalis lumborum (1) and the longissimus lumborum (2) are fused, even though they appear to be separate. A tail muscle, the sacrocaudalis dorsalis lateralis m. (asterisk), is present. The transversospinalis system (3) is represented by the multifidus lumborum (3).

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