Chapter 25, Problem 25.44E

Interpretation Introduction

Interpretation:

An explanation regarding the flow of water which occurs when the active readsorption of ${\text{Na}}^{+}$ ions from the renal tubules into the blood takes place during dehydration is to be stated.

Concept introduction:

The maintenance of fluid balance within the body is an important mechanism. The human body roughly contains about $\text{50 \%}-7\text{5 \%}$ water. The amounts of fluid in the cells, in blood vessels and in the interstitial spaces should remain fairly constant.

Aldosterone is a steroid hormone. It is secreted by the adrenal gland.