Observations on the olfactory organ of adult and juvenile Octopus joubini.
The olfactory organ has an epithelium containing many sense cells and a large subepithelial mass of receptor cells. The epithelium includes cells with cup-shaped, ciliated endings, and hollow, flask-shaped sense cells with ciliated cavities that open to the surface, through a small pore. Below the epithelium are large hollow cells with ciliated cavities and distal processes that either form patent connections between the ciliated cavity and the surface or have a ciliated ending at the surface. There are many synapses between processes in the olfactory nerve. The possible chemosensory function of the olfactory organ is discussed.
D000367:Age Factors; D000818:Animals; D001369:Axons / Q000648:ultrastructure; D002923:Cilia / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D003712:Dendrites / Q000648:ultrastructure; D004847:Epithelial Cells; D004848:Epithelium / Q000648:ultrastructure; D007365:Intercellular Junctions / Q000648:ultrastructure; D049831:Octopodiformes / Q000648:ultrastructure*; D009831:Olfactory Mucosa / Q000294:innervation / Q000648:ultrastructure; D011984:Sensory Receptor Cells / Q000648:ultrastructure; D013569:Synapses / Q000648:ultrastructure