Among adults, body fluids are primarily intracellular with slightly less extracellular fluid. In infants and children, all of the following but one is true about extracellular fluid:
  1. At three years of age, the balance between ICF and ECF is more like that in adults
  2. Infants and children have proportionately less extracellular fluid than adults
  3. At birth, more than half of the child’s weight is ECF
  4. three years of age, the extracellular fluid is about 45% from interstitial fluid, plasma, and transcellular fluid
Explanation
Answer - B - In infants and children, all of the listed facts are true about extracellular fluid except that infants and children have proportionately less extracellular fluid than adults. They actually have proportionately more extracellular fluid as compared to adults.
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