abnormal scala media morphology abnormal Hensen stripe morphology abnormal Hensen's stripe morphology any structural anomaly of the dark, nonstriated, V-shaped band (ridge) found on the underside of the tectorial membrane (TM) in the basal region of the cochlea, from which fine gelatinous trabeculae extend to fix the TM to the border cells, i.e. cells directly adjacent to the inner phalangeal cells; Hensen's stripe is continuous with a more external homogeneous basal layer, from which a marginal band of an amorphous substance originates; the marginal net extends from the marginal band and attaches the lateral border of the TM to Hensen's cells of the organ of Corti. Hensen's stripe and the homogeneous basal layers display interruptions through which the fibrillar structure of the TM is visible MP:0013961