New ultrastructural features in the vestibular labyrinth of the toadfish, Opsanus tau.
Electron microscopy of the toadfish vestibular labyrinth demonstrated the usual cytoarchitectural efferent-hair cell organization with type II hair cells having efferent synaptic terminals directly onto the hair cell bodies. Additional, unexpected findings were: direct efferent-afferent synapses; and two types of synaptic vesicles either found both in the same efferent terminals or in two separate classes of efferent terminals.
D000344:Afferent Pathways / Q000648:ultrastructure; D000818:Animals; D001369:Axons / Q000648:ultrastructure; D004525:Efferent Pathways / Q000648:ultrastructure; D005399:Fishes; D008854:Microscopy, Electron; D013569:Synapses / Q000648:ultrastructure; D014722:Vestibule, Labyrinth / Q000294:innervation / Q000648:ultrastructure*