[Comparative anatomical study of the microvessel in chick cochlea].
OBJECTIVE
In order to providing information for related research, the ultrastructure of microvessel in chick cochlea was investigated.


METHODS
Transmission electronic microscope and scanning electronic microscope were used to observe the ultrastructure of microvessel in cochleas of 10 chicks.


RESULTS
None typical blood capillary with thin--wall was found in chick cochleas, none microvessel was found within basilar membrane, the wall of microvessel in chick cochleas was thick, many lays of fibrils and pericytes and its processes were lined alternately from the endothelial cells to the peripheric basement membrane. Every fold of tegmentem vasculosum contained a microvessel. The ultrastructure of microvessel in spiral ganglion was similar to that of tegmentem vasculosum. The processes of pericyte were netted each other on the surface of microvessel.


CONCLUSIONS
The ultrastructure and the distribution of microvessels in chick cochlea are differented significantly to that of cochlea in mammal. The significance should be investigated further.
Yu
Zilong
Z
Department of Otolaryngology, Beijing Tongren Hospital, Capital University of Medical Sciences, Beijing 100730.
Wang
Jibao
J
D000717:Anatomy, Comparative; D000818:Animals; D002642:Chick Embryo; D003053:Cochlear Duct / Q000098:blood supply* / Q000648:ultrastructure; D004730:Endothelium, Vascular / Q000648:ultrastructure; D005260:Female; D008297:Male; D008833:Microcirculation / Q000648:ultrastructure*; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D013680:Tectorial Membrane / Q000098:blood supply / Q000648:ultrastructure