Chapter 24.6, Problem 1QC

Summary Introduction

To review:

The change in the concentration of the filtrate, as it passes through the renal tubule and the collecting system.

Introduction:

The three main physiological functions of the kidney are glomerular filtration, tubular reabsorption, and tubular secretion. These functions are performed by the structural and functional units of the kidney, called nephrons. Tubular reabsorption is the process of retention of useful substances such as water, glucose, amino acids, and essential electrolytes from the filtrate into the blood. On the other hand, tubular secretion is the process of removal of harmful substances from the blood, into the filtrate, so that they can be excreted through urine.