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Ch. 26 Fluid, Electrolyte, and Acid-Base Balance

Chapter 25, Problem 1

Body water content is greatest in a. infants, b. young adults, c. elderly adults.

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Hi, everyone. Let's look at the next question. It says, why do infants have dewy in quotation marks skin that looks like a freshly picked peach. A high blood volume. B, high body water content, C low bone mass or d low body fat. That was a very poetic question. But when we look at these different factors for infants having dewy or more hydrated skin, the answer is they have very high water body content. Well, excuse me, body water content, infants have about 73% body water content. And that's in comparison to adults where adult men have somewhere between 50 to 65% water content. And adult women somewhere between 45 to 60% water content. So you can see that the baby's body water content is much higher than adults. And that does give them a sort of dewy look as our question puts it choice. A high blood volume is not related to the appearance of moistness in the skin. And although infants do have low bone mass and moderate to low amount of body fat, they have a high amount of body fat compared to other species, but they will build more body fat as they go through that first year. And so neither of those things impact their body water content and then this appearance of their skin. So try CND, not a correct answer. So why do infants have dewy skin choice? B high body water content? See you in the next video.