Hypotrophy was evident in the axial musculature
, with the presence of winged scapulae.
The formation and manipulation of body knots requires coordinated bending and twisting movements, which, we theorize, are facilitated in hagfish by the presence of a flexible, elongate body devoid of vertebrae, a relatively complex arrangement of axial musculature
, and loose skin.
Here also forceful contractions of the axial musculature
in a generalized tonic clonic seizure produce hyperflexion of spine leading to fractures, especially of the thoracic vertebra (6).