axonemal dynein complex inner dynein arm bf GO:0036156 inner dynein arm complex Inner arm structure present on the outer doublet microtubules of ciliary and flagellar axonemes. The structure of inner dynein arms is complex and may vary within the axoneme. Inner dynein arms are heteromeric, comprising 8 different heavy chains and various subunits. Inner and outer dynein arms have different functions in the generation of microtubule-based motility. cellular_component 2012-03-21T01:24:54Z