Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
d. ADH triggers water reabsorption from the nephron loop.
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Ch. 24 The Urinary System
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomous Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Nutrition and Metabolism7
- Ch. 24 The Urinary System39
- Ch. 25 Fluids, Electrolytes, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 24, Problem 7e
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
e. Obligatory water reabsorption occurs in the distal tubule and collecting system.
Verified step by step guidance1
Understand the concept of obligatory water reabsorption: Obligatory water reabsorption refers to the process where water is reabsorbed in the nephron due to osmotic gradients created by solute reabsorption, and it occurs independently of hormonal control. This primarily happens in the proximal tubule and the descending limb of the nephron loop (loop of Henle).
Analyze the statement: The statement claims that obligatory water reabsorption occurs in the distal tubule and collecting system. Recall that these regions are primarily involved in facultative water reabsorption, which is regulated by hormones like antidiuretic hormone (ADH).
Determine the accuracy of the statement: Since obligatory water reabsorption does not occur in the distal tubule and collecting system, the statement is false.
Correct the false statement: Replace 'distal tubule and collecting system' with 'proximal tubule and descending limb of the nephron loop' to make the statement true. The corrected statement would be: 'Obligatory water reabsorption occurs in the proximal tubule and descending limb of the nephron loop.'
Review the corrected statement: Ensure that the corrected statement aligns with the physiological processes of the nephron and accurately reflects the locations of obligatory water reabsorption.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Obligatory Water Reabsorption
Obligatory water reabsorption refers to the process by which water is reabsorbed in the kidneys regardless of the body's hydration status. This primarily occurs in the proximal convoluted tubule and the descending limb of the loop of Henle, where water follows solutes like sodium and glucose, ensuring that essential water is retained.
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1b) Passive Reabsorption of Water & Solutes in the Proximal Tubule
Distal Tubule and Collecting Duct
The distal tubule and collecting duct are segments of the nephron where further regulation of water and electrolyte balance occurs. While these areas can reabsorb water, this process is typically influenced by hormones such as aldosterone and antidiuretic hormone (ADH), making it a site of facultative rather than obligatory reabsorption.
Recommended video:
4:243) Reabsorption in the Distal Tubule and Collecting Duct
True/False Statement Correction
In the context of evaluating statements, marking them as true or false requires an understanding of the underlying physiological processes. If a statement is false, it is essential to identify the inaccuracies and provide a corrected version that accurately reflects the established scientific knowledge, ensuring clarity and precision in communication.
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Related Practice
Textbook Question
Which of the following is false about the GFR?
a. The GFR averages about 120 ml/min
b. The GFR increases when the afferent arteriole dilates
c. The GFR decreases when the efferent arteriole constricts
d. The GFR decreases when the afferent arteriole constricts
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. The distal tubule reabsorbs sodium ions and secretes potassium and hydrogen ions in response to ADH.
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
c. Sodium ion reabsorption creates a gradient that helps drive the reabsorption of water and many other solutes from the proximal tubule.
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Textbook Question
The route by which substances are reabsorbed by crossing through the cells of the renal tubule and collecting system is known as the:
a. Paracellular route
b. Transcellular route
c. Primary active transport route
d. Facultative route
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Textbook Question
Fill in the blanks for the following statements:
a. When the GFR decreases, the macula densa releases chemicals to______ the afferent arteriole.
b. The sympathetic nervous system______ the blood vessels supplying the kidney _____ to the glomerular filtration rate.
c. The enzyme _____ is released by JG cells in response to a decrease in the GFR.
d. The enzyme ______ converts angiotensin-I to angiotensin-II.
e. Generally, angiotensin-II______ systemic blood pressure while _____ the GFR.
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