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자라에 있어서 靜脈環流量의 增加가 心搏에 미치는 影響 Effects of Increasing the Venous Return on the Heart Rate in the Water Turtle

대한생리학회지 1977년 11권 2호 p.17 ~ 22
梁又振, 吉洹植, 李鍾銀,
소속 상세정보
梁又振 (  ) 
全南大學校 醫科大學 生理學敎室

吉洹植 (  ) 
全南大學校 醫科大學 生理學敎室
李鍾銀 (  ) 
全南大學校 醫科大學 生理學敎室

Abstract


By the intravenous infusion of saline solution through the postcaval vein, the effects of increasing the venous return on the heart rate were studied in the water turtle (Amyda japonica). The following results were obtained:
1) Prior to saline infusion, when the initial heart rate was below 50?55/min the heart rate was increased by the infusion. When the initial rate was above this value no changes in heart ratewere observed following the infusion.
2) When the heart rate was decreased by vagal stimulation, the infusion elicited a remarkable increase in the heart rate.
3) Increased heart rate caused by the infusion was not affected by vagotomy or sympathectomy.
4) These results suggest that the increase in heart rate secondary to increased venous return is under the control of a myogenic regulatory mechanism, not a neural mechanism.

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