[Structural and functional organization of the vestibular apparatus in rats maintained under weightless conditions for 19.5 days aboard the satellite "Cosmos-782"].
Vestibular apparatus was investigated in rats subjected to weightlessness for 19.5 days in the satelite "Cosmos-782" and experienced acceleration on launching and landing. Some structural and functional changes were noted. They were seen in otolith clinging to the utricular receptor surface and in the peripheral arrangement of the nucleolus in the nuclei of the receptor cells. It is also possible that increased edema of the vestibular tissue resulted in destruction of some receptor cells, and within the otolith--changes in the form and structure of otoconia. In the horizontal crista the cupula was separated.
D000054:Acceleration / Q000009:adverse effects; D000818:Animals; D002466:Cell Nucleolus / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D004487:Edema; D007759:Labyrinth Diseases / Q000209:etiology; D008854:Microscopy, Electron; D009336:Necrosis; D051381:Rats; D012444:Saccule and Utricle / Q000473:pathology / Q000648:ultrastructure; D012665:Semicircular Canals / Q000473:pathology; D011984:Sensory Receptor Cells / Q000648:ultrastructure; D014722:Vestibule, Labyrinth / Q000473:pathology*; D014893:Weightlessness / Q000009:adverse effects*
Strukturnaia i funktsional'naia organizatsiia vestibuliarnogo apparata krys, prebyvavshikh v usloviiakh nevesomosti 19.5 dnei na sputnike "Kosmos-782".