Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 6, Problem 28RA
Summary Introduction
To review:
1. The osmotically active nature of mannitol.
2. The role of mannitol in prevention of swelling of the brain during head trauma along with its effect on the water content of urine.
Introduction:
Mannitol is a form of sugar also known as sweet sugar alcohol. It also serves as an osmotic diuretic. It regulates the blood plasma osmolality by enhancing the flow of water from the tissues into the intestinal fluid and blood plasma.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Blood volume must be restored in a person who has lost large amounts of blood due to serious injury. This is often accomplished by infusing isotonic NaCl solution into the blood. Why is this more effective than infusing an isoosmotic solution of a penetrating solute, such as urea?
Hyperkalemia is associated with the inability of the kidneys to properly filter potassium out of the blood. Which type of membrane transport do the kidneys use to filter the blood?
A. Hydrostatic pressure
B. Osmotic pressure
C. Filtration
D. Active diffusion
Using the principles of osmosis, explain why movement of Na + through a plasma membrane is followed by movement of water. Use this concept to explain the rationale on which oral rehydration therapy is based.
Chapter 6 Solutions
Human Physiology
Ch. 6 - Describe the distribution of fluid in the body.Ch. 6 - Describe the composition of the extracellular...Ch. 6 - List the subcategories of passive transport and...Ch. 6 - Explain what is meant by simple diffusion and list...Ch. 6 - Prob. 4CPCh. 6 - Prob. 5CPCh. 6 - Explain how the body detects changes in the...Ch. 6 - Prob. 7aCPCh. 6 - Prob. 7bCPCh. 6 - Prob. 7cCP
Ch. 6 - Prob. 8CPCh. 6 - Prob. 9aCPCh. 6 - Prob. 9bCPCh. 6 - Explain the relationship of the resting membrane...Ch. 6 - Prob. 10bCPCh. 6 - Prob. 11CPCh. 6 - Prob. 12CPCh. 6 - The movement of water across a plasma membrane...Ch. 6 - Which of these statements about the facilitated...Ch. 6 - Prob. 3RACh. 6 - Prob. 4RACh. 6 - Blood plasma has an osmolality of about 300 mOsm....Ch. 6 - Prob. 6RACh. 6 - The most important diffusible ion in the...Ch. 6 - Prob. 8RACh. 6 - Prob. 9RACh. 6 - Prob. 10RACh. 6 - Prob. 11RACh. 6 - Prob. 12RACh. 6 - Prob. 13RACh. 6 - Prob. 14RACh. 6 - Which of the following questions regarding second...Ch. 6 - Prob. 16RACh. 6 - Prob. 17RACh. 6 - Compare the resting membrane potential of a neuron...Ch. 6 - Prob. 19RACh. 6 - Prob. 20RACh. 6 - Prob. 21RACh. 6 - Prob. 22RACh. 6 - Using the principles of osmosis, explain why...Ch. 6 - Prob. 24RACh. 6 - Prob. 25RACh. 6 - Prob. 26RACh. 6 - Prob. 27RACh. 6 - Prob. 28RACh. 6 - Prob. 29RACh. 6 - Prob. 30RACh. 6 - Using only the information in this chapter,...Ch. 6 - Prob. 32RACh. 6 - Prob. 33RACh. 6 - Suppose a semipermeable membrane separates two...Ch. 6 - Prob. 35RACh. 6 - Prob. 36RACh. 6 - Use the Nernst equation and the ion concentration...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- When the body becomes dehydrated, the posterior pituitary gland secretes vasopressin which signals the kidney tubules to retain water leading to infrequent urination. Which type of cellular communication is mediated by vasopressin?arrow_forwardDescribe the contribution of each of the following to establishing and maintaining membrane potential: (a) the Na+K+ pump, (b) passive movement of K+ across the membrane, (c) passive movement of Na+ across the membrane, and (d) the large intracellular anions.arrow_forwardThe rate at which the Na+K+ pump operates is not constant but is controlled by a combined effect of changes in ICF Na+ concentration and ECF K+ concentration. Do you think the changes in both ICF Na+ and ECF K+ concentration following a series of action potentials in a neuron would accelerate, slow down, or have no effect on the Na+K+ pumps in this cell?arrow_forward
- Renal tubule cells in the kidney medulla are constantly exposed to high extracellular osmolarity. How do they maintain normal cell volume?arrow_forwardBy what mechanism does the active transport of Na1 lead to the osmotic flow of water across an epithelium?arrow_forwardGout is caused by an error in metabolism that leads to abuildup of uric acid in body fluids, which is deposited as slightlysoluble sodium urate (C₅H₃N₄O₃Na) in the joints. If the extra-cellular [Na⁺] is 0.15 Mand the solubility of sodium urate is0.085 g/100. mL, what is the minimum urate ion concentration(abbreviated [Ur⁻]) that will cause a deposit of sodium urate?arrow_forward
- A person in liver failure is deficient in large proteins usually found in the plasma. Whatwill happen to fluid in the extracellular space (interstitial space)? Why? How will thisaffect the appearance of the patient?arrow_forwardIf we intake very highly concentrated sugar/salt solution, then what types of osmotic effects may occur?arrow_forwardIn some circumstances, as during a nerve impulse, sodium ions must enter the cell. How are they able to do so?arrow_forward
- Movement of glucose from one side to the other side of the intestinal epithelium is a major example of transcellular transport. How does the Na+/K+ ATPase power the process? Why are tight junctions essential for the process? Why is localization of the transporters specifically in the apicalor basolateral membrane crucial for transcellular transport? Rehydration supplements such as sport drinks include a sugar and a salt. Why are both important to rehydration?arrow_forwardHyperkalemia is a condition by which ECF potassium levels become too high (usually due to kidney failure). Consider the following questions about the consequence of hyperkalemia on membrane potential. How would hyperkalemia affect EK? Considering your answer to the previous question, how would hyperkalemia affect membrane potential?arrow_forwardSodium is an incredibly important substance in our body. You may remember from Module 1 that sodium ions play a crucial role in conducting nerve impulses during depolarization. You may also remember from Biology 20 that sodium is involved in muscle contractions. Hyponatremia is a condition where there is too little sodium in the body. This can result in difficulty processing thoughts, nausea, decreased ability to balance, seizures and coma. On the other hand, an excessive amount of sodium or hypernatremia, in the body can also lead to many different neurological problems including seizures and coma. Katrina has an excessive amount of sodium ions in her blood plasma. This is occurring despite the fact that she had been watching her salt intake and ensuring that she's drinking enough fluid throughout the day. Which hormone imbalance is causing this problem for Katrina? Explain your reasoning hormone: ___________________ reason: ______________________arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Excretory System; Author: Amoeba Sisters;https://www.youtube.com/watch?v=q5qaGHfdmYM;License: Standard youtube license