ATI RN
Chapter 14 Nutrition and Fluid Balance Workbook Answers Questions
Question 1 of 5
Salt conservation by the body will result in a hypertonic ECF.
Correct Answer: A
Rationale: Certainly! Salt conservation by the body will lead to an increase in the sodium concentration in the extracellular fluid (ECF), making it hypertonic. This occurs when the kidneys reabsorb more sodium to maintain electrolyte balance. Other choices are incorrect as they do not accurately describe the outcome of salt conservation on ECF tonicity.
Question 2 of 5
Diabetes insipidus often leads to hypertonicity of the body fluids.
Correct Answer: A
Rationale: Diabetes insipidus causes excessive urination leading to dehydration and increased concentration of body fluids. This results in hypertonicity, making choice A true. Choice B is incorrect as it contradicts the physiological response to diabetes insipidus. Choices C and D are not applicable as they do not provide any relevant information.
Question 3 of 5
The primary factor responsible for regulating H O balance in the body is control of fluid intake via the thirst mechanism.
Correct Answer: A
Rationale: Step 1: The primary factor regulating H2O balance is essential for maintaining proper bodily functions. Step 2: The thirst mechanism is the body's way of signaling the need for fluid intake to maintain hydration. Step 3: By controlling fluid intake through the thirst mechanism, the body can regulate its H2O balance effectively. Step 4: Therefore, the statement that the primary factor responsible for regulating H2O balance in the body is control of fluid intake via the thirst mechanism is TRUE. Summary: - Choice A is correct because the thirst mechanism plays a crucial role in regulating H2O balance. - Choice B is incorrect as it contradicts the importance of the thirst mechanism in H2O balance regulation. - Choices C and D are not applicable as they are labeled as "NA".
Question 4 of 5
The dissociation constant represents the fact that an individual acid always dissociates to the same extent.
Correct Answer: B
Rationale: The correct answer is B, FALSE. The dissociation constant (Ka) represents the extent to which an acid dissociates into its ions in solution. It varies depending on the specific acid and its concentration. Therefore, it is not true that an individual acid always dissociates to the same extent. Choice A is incorrect because it incorrectly states that it is true. Choices C and D are not applicable in this context.
Question 5 of 5
The protein and phosphate buffer systems both contribute to buffering of the ICF.
Correct Answer: A
Rationale: The protein and phosphate buffer systems contribute to buffering of the intracellular fluid (ICF) by regulating pH levels. Proteins contain ionizable groups that can act as buffers by accepting or donating protons. Phosphate buffer system also helps maintain intracellular pH by converting H2PO4- to HPO4^2-, adjusting pH levels. These systems work together to prevent drastic changes in pH within cells. This makes choice A true. Choices B, C, and D are incorrect as they do not provide any explanation or reasoning related to the buffering capacity of the protein and phosphate buffer systems in the intracellular fluid.