ISSA Nutritionist Practice Exam

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Prepare for the ISSA Nutritionist Exam with comprehensive quizzes and study materials designed to enhance your knowledge and confidence. Tackle multiple-choice questions that reflect the exam format, with hints and detailed explanations for better understanding. Get set to ace your certification!

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What percentage of total body water is located in the intracellular space?

  1. 30%

  2. 60%

  3. 68%

  4. 72%

The correct answer is: 68%

The percentage of total body water located in the intracellular space is indeed approximately 60%. This water compartment is crucial as it houses the majority of the body's fluids, significantly influencing cellular function and homeostasis. To clarify the context, total body water is generally divided into two major compartments: intracellular fluid (ICF), which accounts for about 60% of total body water, and extracellular fluid (ECF), which makes up the remaining 40%. The precise percentage can vary depending on several factors, such as age, sex, and body composition, but the 60% figure is well established in physiological literature. The alternatives provided do not accurately reflect the common scientific understanding of fluid distribution within the body. Therefore, while the selected answer indicates a value often thought to be closer to the actual intracellular volume, it is essential to recognize the standard that 60% is the widely accepted percentage for total body water in the intracellular space.

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