...
首页> 外文期刊>The Biological Bulletin >On the Relationship Between the Feedback Control of Digestion and the Temporal Pattern of Food Intake
【24h】

On the Relationship Between the Feedback Control of Digestion and the Temporal Pattern of Food Intake

机译:消化系统的反馈控制与食物摄入时间规律的关系

获取原文
获取原文并翻译 | 示例
           

摘要

I have considered a simple caricature of the relationship between food intake and digestion. Indeed, I have only sketched an analysis of this system. Despite its defects, my analysis shows a possible link between digestive regulation and an important outstanding problem in feeding ecology—animal preferences for immediate food reward. Many complications await further analysis: What if more realistic reaction kinetics are used? What if there is feedback control of the evacuation rate r? What if nutrients are stored after digestion instead of (as well as) before? There have been many mathematical models of digestion: models of optimal passage rate; the effect of gut length and morphology on digestive efficiency, etc. (Yang, 1993; Penry and Jumars, 1986; Penry and Ju-mars, 1987; Sibly, 1981). Moreover, many studies have quantified the feedback relations involved in "gastric emptying" (McHugh and Moran, 1979; Hainsworth, 1989). Rather than draw explicitly from this literature, I have built an elementary model crudely patterned after the Phormia crop-foregut-midgut system studied by De-thier(1976).
机译:我考虑了食物摄入与消化之间关系的简单描绘。确实,我只是草绘了对该系统的分析。尽管存在缺陷,但我的分析表明,消化调节与喂养生态学中的一个重要悬而未决的问题之间存在可能的联系,即动物对即时食物奖励的偏好。许多并发症有待进一步分析:如果使用更现实的反应动力学该怎么办?如果有疏散率r的反馈控制怎么办?如果营养物在消化后而不是之前(以及之前)存储了怎么办?消化的数学模型很多:最佳通过率模型;肠道长度和形态对消化效率的影响等(Yang,1993; Penry和Jumars,1986; Penry和Ju-mars,1987; Sible,1981)。此外,许多研究已经量化了与“胃排空”有关的反馈关系(McHugh和Moran,1979; Hainsworth,1989)。而不是从这些文献中明确借鉴,我建立了一个基本模型,该模型是根据De-thier(1976)研究的Phormia作物-前肠-中肠系统粗略地仿制而成的。

著录项

  • 来源
    《The Biological Bulletin》 |1996年第1期|p.85-91|共7页
  • 作者

    D. W. STEPHENS;

  • 作者单位

    Nebraska Behavioral Biology Group, School of Biological Sciences, University of Nebraska, Lincoln, Lincoln, Nebraska;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物科学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号