Body fluid accounts for more than 50% of a healthy adult’s body weight and water plays a critical role in human health.
Three possible body functions are listed below. Decide which are functions of water and which are not.
Body Functions
yes or no
Acts to maintain body temperature
Protects against bacterial infections
Provides lubrication for organs

Dehydration occurs when water excretion water intake. Individuals at risk include the elderly, infants, people exercising heavily for prolonged periods in the heat, and individuals suffering from both short and prolonged bouts of vomiting and diarrhea. Most problems associated with dehydration can be avoided if they are recognized and treated early. If left untreated, however, dehydration can lead to severe consequences including seizures, brain damage, shock, or even death.