摘要
本文选用青年、成年、老年大白鼠各5只,采用热碱消化法对颈总动脉消化3～5小时,得到纯化的弹性组织结构,应用扫描电镜定量分析颈总动脉内弹性膜窗孔的年龄变化,结果表明,随增龄,内弹性膜窗孔数目以成年最多,青年组其次,老年组最少;大窗孔数目增加;窗孔面积增大;窗孔所占管壁面积百分比增多.此结果在国内、外均未见报导.
The fenestrations and internal elastic laminae of common carotid artery were studied in 15 Wistar rats,aged from 3 month to 3 years.We isolated the elastic tissue with hot alkali (75℃ 3—5 hours)and examined its luminal surface by SEM. The number of fenestration was the most in adult,more in young and the lest in old aged group.With advancing age,the number of enlarged fenestrations was increased. With advancing age,there was a significantly increase in the area of fenestrations in com- mon carotid artery.And the percentage area of fenestrations was significantly greater in old group than in young and adult groups in common carotid artery.
