Chapter 26, Problem 1CP

Summary Introduction

To review:

Wastes and role of kidneys in removing them from the body.

Introduction:

The urinary system falls under the biological system that is responsible for expelling out waste materials from the body. Kidneys, urethra, ureters, and urinary bladder are major parts of this system. The prime aim of this system is to filter the blood and remove the toxins from the body.

Explanation of Solution

Wastes in simple words are defined as the unused substances after the metabolic processes that are not absorbed by the body. In urinary system, it is known as urine. Urine is basically a concentrated solution comprising urea, water, amino acids, salts, ammonia, by- products of bile, and all other substances, which cannot be reabsorbed by the body are thrown out. Bilirubin from the catabolism of the hemoglobin, uric acid, and creatinine coming from the breakdown of the creatine phosphate present in the muscles also constitute the wastes. Other kinds of wastes eliminated in the urine are basically the foreign substances, which are coming from the diet like drugs and environmental toxins.

Kidneys are the primary organs of the urinary system, which are responsible for filtering and eliminating the wastes from the body. Kidneys filter the blood that is coming from the body and eliminates the toxins whose presence in the body can be dangerous.

Conclusion

Therefore, it can be concluded that the wastes are thrown out of the body through the urinary system in the form of urine, which is formed by kidneys. Kidneys are responsible for filtering the blood.