Question

name
class
date
section 2 the urinary system continued
how does the urinary system control water?
you lose water every day in sweat and urine, and you replace water when you drink. you need to get rid of as much water as you drink. if you dont, your body will swell up. chemical messengers called hormones help control this balance.
one of these hormones is called antidiuretic hormone (adh). adh keeps your body from losing too much water. when there is not much water in your blood, adh tells the nephrons to put water back in the blood. the body then makes less urine. if there is too much water in your blood, your body releases less adh.
drinking water when you exercise helps replace the water you lose when you sweat.
some drinks contain caffeine, which is a diuretic. diuretics cause kidneys to make more urine. this means that a drink with caffeine can actually cause you to lose water.
critical thinking

1. infer what do you think happens when your body releases less adh?

Explanation:

To solve this, we analyze the role of ADH from the text. ADH tells nephrons to put water back in blood (reducing urine). If less ADH is released, nephrons won't reabsorb as much water. So, the kidneys will make more urine, and the body will lose more water (since less water is retained in the blood).

Answer:

When the body releases less ADH, the nephrons do not put as much water back into the blood. As a result, the kidneys produce more urine, and the body loses more water (since less water is reabsorbed and more is excreted in urine).