ATI RN
Chapter 14 Nutrition and Fluid Balance Questions
Question 1 of 5
If one female has a higher muscle mass than another female of the same age, the first female will also have a lower amount of water in their body.
Correct Answer: B
Rationale: Rationale: 1. Muscle mass and water content in the body are not directly correlated. 2. Muscle mass is related to physical activity and genetics, while water content is influenced by hydration levels. 3. Therefore, having higher muscle mass does not necessarily mean lower water content. 4. Hence, the statement that the first female will have lower water content is false. Summary: A: Incorrect - Muscle mass and water content are not causally related. C & D: Not applicable - These choices do not provide relevant explanations.
Question 2 of 5
The most important reason for tight regulation of ECF osmolarity is to ensure that blood pressure is maintained at an appropriate level.
Correct Answer: B
Rationale: The correct answer is B. Regulation of extracellular fluid (ECF) osmolarity is primarily to maintain cell function and prevent osmotic imbalances, not specifically for blood pressure regulation. Osmotic balance is crucial for cellular processes like nutrient exchange and waste removal. Tight regulation prevents cell shrinkage or swelling. Blood pressure is more directly controlled by mechanisms like vascular resistance and cardiac output. Other choices are irrelevant as they are not applicable to the question.
Question 3 of 5
The amount of sodium reabsorbed by the kidneys depends on the baroreceptor reflex and adjustments to glomerular
Correct Answer: B
Rationale: The correct answer is B: FALSE. Sodium reabsorption in the kidneys is primarily regulated by the renin-angiotensin-aldosterone system and not the baroreceptor reflex. The baroreceptor reflex primarily regulates blood pressure through changes in heart rate and vascular tone. Therefore, choice B is correct. Choices A, C, and D are incorrect as they do not provide accurate explanations related to the regulation of sodium reabsorption in the kidneys.
Question 4 of 5
The ECF volume and osmolarity are regulated primarily by the kidneys.
Correct Answer: A
Rationale: The correct answer is A: TRUE. The extracellular fluid (ECF) volume and osmolarity are indeed primarily regulated by the kidneys. The kidneys control water and electrolyte balance in the body, adjusting urine concentration to maintain ECF volume and osmolarity within a narrow range. They regulate the reabsorption and excretion of water and electrolytes in response to hormonal signals and the body's needs. The other choices are incorrect as they do not provide any relevant information or explanation.
Question 5 of 5
Vasopressin is normally secreted when a deficit of water develops in the body.
Correct Answer: A
Rationale: Step 1: Vasopressin is also known as antidiuretic hormone and helps regulate water balance by acting on the kidneys. Step 2: When the body detects a deficit of water, vasopressin is secreted to prevent water loss. Step 3: Therefore, the statement that vasopressin is normally secreted when a deficit of water develops in the body is true. Summary: Option A is correct because vasopressin is indeed secreted in response to water deficit. Options B, C, and D are incorrect as they do not provide the accurate explanation for the secretion of vasopressin in response to water deficit.