98 of saliva is water, but why can t saliva quench thirst?

The basic physiological function of saliva is to moisten and clean the mouth, stabilize the oral environment, and eliminate productionTartarbacteria, dissolve things that are harmful to the teeth, soften food swallowing, break down enzymes that aid digestion, and aid digestion。If amylase in saliva.

or weakened proteases, which will affect the digestion of food and easily cause gastrointestinal inflammation or ulcers.

Because it does not protect the gastric mucosa from stomach acid.

Damage. Saliva is a much more concentrated liquid than water and contains a variety of proteins and enzymes.

Fresh water has a lower concentration of salts and solutes than human fluids, so when a person is thirsty, drinking a glass of water can quench his thirst. If you drink a glass of a substance that is less concentrated than body fluids, your body will be able to absorb the water in this substance, thus allowing the body to get enough water.

But if you drink a glass of a substance that is higher in concentration than bodily fluids, the water in your body will flow to this substance, and you will be thirstier. In fact, most of the fluids and saline you buy at pharmacies are still in high concentrations. Therefore, swallowing saliva will only make you thirsty because the fluid in your body will flow to a higher concentration of saliva instead of dehydrated cells.

In other words, there is not enough water in the saliva. When a person is severely dehydrated and cannot drink water, the doctor will choose to inject normal saline because the concentration of body fluid is equivalent to normal saline, and normal saline will not ** cells. If pure water is injected into the body, the water rushes to the cells with a higher concentration, causing the cells to expand to burst.

Also, when you're thirsty, the saliva concentration will be higher because you don't have enough fluid to dilute your saliva. However, saliva is not the most concentrated fluid in the body, and blood and pus are more concentrated.

Although saliva does not quench thirst, it still has a lot of functions. For example, saliva lubricates food, making it easier to chew and digest; Enzymes in saliva can be broken downCarbohydrates, fats and proteins; Saliva also has antimicrobial properties that protect periodontal health by attaching to teeth and gums. Saliva is a much more concentrated liquid than water and contains a variety of proteins and enzymes.

Freshwater has a lower concentration of salt and solute than human fluids, so when people are thirsty, drinking a glass of water can quench their thirst.

I think the amount of saliva in it is very small, only a little bit less, but for water, the amount of water in it is more active, and it is easy to quench thirst.

Although 98% of saliva is water, it is really disgusting, who would eat saliva, and their own saliva can't quench their thirst at all.