Water balance is regulated by control of amount(s) (use choices in question 3). a. ingested, b. excreted in urine, c. lost in perspiration, d. lost in feces.

Video transcript

Hi, everybody. Let's look at our next question for the body to remain properly hydrated. There must be regulation of water balance. Ie water intake must be equal to water loss. However, some of the water loss is considered insensible. Which of the following comes under that category A lost as urine B lost in feces. C diffusion through skin or d lost a sweat. Well, what does it mean when it says insensible for a form of water loss that would mean not measurable or not observable to the senses. So when we look at that, meaning, let's look at our forms of water loss and see what we would, which one we would categorize as insensible. So choice A lost as urine. Well, that's measurable water loss. You can measure the amount of urine produced. So choice A not correct. Choice B last and feces measurable observable by the census, you could measure the production of feces and then if you need the water composition, you could obtain that. So choice B not our answer. But when we get to diffusion through skin, now this is a little bit confusing, but it makes it more clear if we compare it to choice of d lost as sweat, water lost her sweat. Well, technically, measurable would be pretty difficult to actually measure, but it's definitely observable to the senses because you know, when you're setting sweating, you feel a wet sensation. So, so that would not be insensible. In contrast, when we look at choice C diffusion through skin, there is a small amount of water that diffuses out of the skin and as well as not being miserable, that is not observable by the senses, you don't notice this form of water loss. So choice C will be our answer as a form of water loss that you would consider insensible diffusion through skin. See you in the next video.