探究酒精对蟾蜍心脏活动的影响

Study on the alcohol concentration influence on the Bufo heart activity

依体重对蟾蜍采用心脏浸润、静脉窦注射、胃注射 3种方法施加不同浓度、不同量的酒精 ,用二道生理记录仪记录心脏搏动曲线 ,结果表明 :随着施加酒精浓度的增加 ,心肌收缩力逐渐加强 ,收缩幅度加大 ,达到峰值后 ,心力逐渐衰竭 ,振幅逐渐下降 ;心率则随着施加酒精浓度的增加略有升高后逐渐减慢 。

Using three methods(soaking hearts, injecting sinus vein,injecting stomach),diff erent concentration and volume of ethyl alcohol were added according to the weig ht of Bufo linnaeus,and then recorded the heart pulsing diagram by the two p hysiology recording instrument. The result showed that the ethyl alcohol obvious ly affects the heart rate and contract range. The contract rate of cardiac muscl e was improved gradually and the contract range widened while increasing the con centration of ethyl alcohol. However, when the concentration got its maximum, th e heart activity was exhausted gradually and the range descends gradually. The h eart rate slowed down gradually while increasing the alcohol concentration a bit , and then the heart stopped at last.