FIGURE 11 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand

FIGURE 11. Diagrammatic representation of generalized morphology of ctenidia of Isognomon spathulatus. Abbreviations: abv, afferent blood vessel; cdr, row of ciliated disks; crm, ctenidial longitudinal retractor muscle; cta, ctenidial axis; ds, dorsal septum; ebv, efferent blood vessel; fg, food groove; id, inner demibranch; idb, interdemibranchial buttress; od, outer demibranch; ogf, ordinary gill filament; sm, suspensory membrane; tf, tissue fusion.