摘要
为研究内耳微血管解剖结构的特点，应用微血管铸型技术，在扫描电镜下观察了１０只豚鼠基底膜、椭圆囊、球囊和三个壶腹的微血管三维空间构架。研究发现，无论在耳蜗或前庭，细动脉在到达供应部位以前均作螺旋状盘旋数周，延长了血管的长度，可维持内耳稳定的血液供应，并使内耳感受器不致受到血管搏动和血流噪声的影响。内耳微血管解剖的另一特点是，壶腹嵴半月面区的血管网较血管纹区稀疏，提示血管纹区的代谢比暗细胞区者旺盛；而基底膜中的微血管网较前庭区感觉上皮下方的血管网明显稀少，提示耳蜗毛细胞的能量需求较少，对缺氧的耐受力较强。
Inordertoinvestigatethecharactersofinnerearvesselsusingthemicrovascularcor-rosioncastingtechniqueandscanningelectronmicroscopethethree-dimensionalspatialpictureofthevesselsincochlearbasilarmembrane,utriculus,sacculusandthreeampulaeofguineapigwereob-served.Itwasfoundthatarteriolecoilswerepresentinthemodiolusampulae,utriculusandsaccu-lus.Thelengthofarterioleswasthereforeprolongedandcouldkeepthebloodsupplyininnerearstable.Thepossibilityofbloodcoagulationinthesesegmentsincreasedbecausethebloodflowbe-cameslowerhere.Anothercharacterwasthatthecapilarynetworksappeareddenserinstriavascu-larisandcentralpartofthecrista,whereasthevesselmeshesinbasilarmembraneofcochleaandinplanumsemiculatumofampulaewerelooser.Thesefindingssuggestedthatthemetabolisminstriavascularisandcentralpartofthecristawouldbemoreprosperousthanthatinthebasilarmembraneandplanumsemiculatumofampulae.
出处
《中华耳鼻咽喉科杂志》
CSCD
1996年第4期219-221,共3页
Chinese Journal of Otorhinolaryngology
关键词
血管
解剖学
内耳
LabyrinthBloodvesselsAnatomy,regionalCorrosioncasting
