Principles of Human Physiology (6th Edition)
Principles of Human Physiology (6th Edition)
6th Edition
ISBN: 9780134169804
Author: Cindy L. Stanfield
Publisher: PEARSON
Question
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Chapter 18, Problem 1E
Summary Introduction

Introduction :

The excretory system consists of the kidneys, ureters, bladder, and urethra. The aim of the system is to eliminate waste from the body in form of urine, regulate blood volume and blood pressure, management levels of electrolytes and metabolites, and regulate blood pH scale.

Expert Solution & Answer
Check Mark

Answer to Problem 1E

Correct answer :

Option (b) is correct.

Explanation of Solution

Explanation/justification for the correct answer :

Option (b) Bladder. The kidneys are the main organs of the excretory system and it filters the blood to form urine. The urine formed in the kidney is transferred through the ureters, which is a tube-like structure. The ureter carries the urine to the urinary bladder, where the urine is stored before it is released to the external environment through the urethra. Hence, option (b) is correct.

Explanation for incorrect answer :

Option (a) Kidneys: The first function of the urinary organ is the filtration of blood and thereby controls the ionic composition, osmolarity, volume, and pH of plasma. The kidneys are concerned with the elimination of metabolic waste products and any foreign particles from the plasma and they filter it to form urine. The kidneys also produce a hormone known as erythropoietin that assists within the formation of red blood cells. Hence, this option is incorrect.

Option (c) Ureter. The ureter is a tube-like structure, which transfers the urine from the kidney to the urinary bladder. It cannot store the urine. Hence, this option is incorrect.

Option (d) Urethra: It is a channel like a tube that transports the urine from the bladder to outside of the body. Hence, this option is incorrect.

Option (e) Gallbladder: The gall bladder is the site for the storage of bile juices secreted by the liver. The bile juice helps in the digestion of fats. Hence, this option is incorrect.

Conclusion

The urinary bladder is the site of the storage of the urine. Hence, option (b) is correct.

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Chapter 18 Solutions

Principles of Human Physiology (6th Edition)

Ch. 18.3 - Describe the barriers for reabsorption and...Ch. 18.3 - Describe the general mechanism of water...Ch. 18.3 - Define the terms transport maximum and renal...Ch. 18.3 - Prob. 1CTQCh. 18.3 - Prob. 2CTQCh. 18.3 - Prob. 3CTQCh. 18.5 - Prob. 1CTQCh. 18.5 - Prob. 2CTQCh. 18.5 - Prob. 3CTQCh. 18.5 - Prob. 18.4.1QCCh. 18.5 - Prob. 18.4.2QCCh. 18.5 - Prob. 18.4.3QCCh. 18.5 - Describe the innervation of the bladder,...Ch. 18 - Prob. 1ECh. 18 - Which of the following is not one of the...Ch. 18 - Which type of specialized junction connects...Ch. 18 - Which of the following does not favor a large...Ch. 18 - Prob. 5ECh. 18 - Prob. 6ECh. 18 - Which of the following would occur if mean...Ch. 18 - Prob. 8ECh. 18 - Prob. 9ECh. 18 - Prob. 10ECh. 18 - Micturition occurs in response to a Relaxation...Ch. 18 - The (ureter/urethra) carries urine from the...Ch. 18 - Urinary excretion is the elimination of urine from...Ch. 18 - The (afferent/efferent) arteriole carries blood...Ch. 18 - Prob. 15ECh. 18 - Prob. 16ECh. 18 - Prob. 17ECh. 18 - Prob. 18ECh. 18 - Prob. 19ECh. 18 - Prob. 20ECh. 18 - Prob. 21ECh. 18 - Prob. 22ECh. 18 - Substances that are reabsorbed move into the...Ch. 18 - An increase in the flow rate through the macula...Ch. 18 - Glucose reabsorption occurs primarily in the...Ch. 18 - Describe the pathway of filtrate flow from the...Ch. 18 - Explain why the glomerular filtration rate does...Ch. 18 - Prob. 28ECh. 18 - Explain the concept of transport maximum. Why does...Ch. 18 - Prob. 30ECh. 18 - Prob. 31ECh. 18 - Prob. 32ECh. 18 - Prob. 33ECh. 18 - Compare the responses of the smooth muscle in...
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