Within a few days after a fast begins, nitrogen excretion accelerates to a higher-than-normal level. After a few weeks, the rate of nitrogen excretion falls to a lower level and continues at this low rate. However, after the fat stores have been depleted, nitrogen excretion rises to a high level. (a) What events trigger the initial surge of nitrogen excretion? (b) Why does nitrogen excretion fall after several weeks of fasting? (c) Explain the increase in nitrogen excretion when the lipid stores have been depleted

Within a few days after a fast begins, nitrogen excretion accelerates to a higher-than-normal level. After a few weeks, the rate of nitrogen excretion falls to a lower level and continues at this low rate. However, after the fat stores have been depleted, nitrogen excretion rises to a high level. (a) What events trigger the initial surge of nitrogen excretion? (b) Why does nitrogen excretion fall after several weeks of fasting? (c) Explain the increase in nitrogen excretion when the lipid stores have been depleted

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter15: Fluid And Acid-base Balance

Section: Chapter Questions

Problem 1ACR

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