the hypothesis that struts tether not only the surfaces but the contractile lattices of laterally adjacent myocytes is supported by the following : ( a ) the attachments of struts to the collagen weave of the sarcolemma , often lateral to the level of z bands , ( b ) the presence of collagen type i in a composite material arrangement , ( c ) the relative dispositions and configurational changes of struts and myocyte surfaces in various physiological states and induced , non-physiological perturbations of cardiac muscle , ( d ) the corrugated sarcolemmas with infoldings near z bands , and ( e ) the continuity of intracellular filaments from z bands to the inner aspect of the sarcolemma in relaxed and contracted myocytes .
C0009325
collagen
C0041455
collagen type i