Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. The sensible water loss includes the water lost from the body via the skin and the respiratory system.
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Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology24
- Ch. 2 The Chemistry of Life37
- Ch. 3 The Cell54
- Ch. 4 Histology46
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System35
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System41
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart28
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity41
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814Not the one you use?Change textbook
Chapter 25, Problem 6d
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
d. Atrial natriuretic peptide promotes water retention in the kidneys and increases the amount of water in the body.
Verified step by step guidance1
Step 1: Begin by understanding the role of atrial natriuretic peptide (ANP). ANP is a hormone secreted by the atria of the heart in response to increased blood volume and pressure. Its primary function is to reduce blood volume and pressure by promoting the excretion of sodium and water by the kidneys.
Step 2: Analyze the statement provided. The statement claims that ANP promotes water retention in the kidneys and increases the amount of water in the body. Compare this claim with the known function of ANP.
Step 3: Identify whether the statement is true or false. Since ANP promotes the excretion of sodium and water, it does not cause water retention. Therefore, the statement is false.
Step 4: Correct the false statement to make it true. A corrected version of the statement would be: 'Atrial natriuretic peptide promotes the excretion of sodium and water by the kidneys, reducing the amount of water in the body.'
Step 5: Summarize the corrected understanding. ANP helps regulate blood pressure and volume by reducing water and sodium levels in the body, which is the opposite of what the original statement suggests.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Atrial Natriuretic Peptide (ANP)
Atrial Natriuretic Peptide (ANP) is a hormone produced by the heart's atria that plays a crucial role in regulating blood pressure and fluid balance. It is released in response to increased blood volume and pressure, promoting natriuresis, which is the excretion of sodium through urine. This process leads to increased urine output and decreased blood volume, counteracting water retention.
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Water Retention
Water retention refers to the body's ability to hold onto excess fluid, which can lead to swelling and increased blood pressure. Hormones like aldosterone and antidiuretic hormone (ADH) typically promote water retention, while ANP has the opposite effect. Understanding the balance between these hormones is essential for comprehending fluid regulation in the body.
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Kidney Function in Fluid Regulation
The kidneys play a vital role in maintaining fluid balance and electrolyte levels in the body. They filter blood, reabsorb necessary substances, and excrete waste products and excess fluids. Hormones such as ANP influence kidney function by altering the reabsorption of sodium and water, thereby affecting overall fluid volume and blood pressure.
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Related Practice
Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
c. The main hormone that regulates fluid balance is antidiuretic hormone (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.
a. The thirst mechanism is mediated by osmoreceptors located in the cerebral cortex.
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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.
e. Dehydration is characterized by a decreased volume and increased osmolarity of the ECF.
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Textbook Question
Which of the following statements best describes the principle of mass balance?
a. The amount of a variable that is gained by the body through ingestion equals the amount that is lost from the body.
b. The body maintains a stable mass at all times.
c. The amount of each variable brought into the body must be balanced by all other variables.
d. The amount of a variable ingested is regulated by a positive feedback loop.
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Textbook Question
Which of the following is false with respect to sodium ions in human physiology?
a. Sodium ions are the most abundant extracellular cation.
b. Sodium ions are an important osmotic particle in the ECF.
c. The entry of sodium ions into a cell causes depolarization.
d. Sodium ions are more concentrated in the cytosol than in the ECF.
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