First, what is left after digestion is saliva, which is very helpful for digestion. In normal times, it is difficult to digest only by the gastric juice in our stomach, so when chewing food, saliva can already decompose some foods, and saliva is rich in salivary amylase. For some starchy foods, saliva can decompose these foods into maltose very well, so in normal times, we will find that if we chew rice continuously, it will become very sweet. This is the function of salivary amylase.
Second, stirring In normal times, we may eat some dry food, such as various steamed buns or rolls, but after these steamed buns and rolls enter our mouth, they will be fully combined with saliva, and then they can enter the digestive tract well after chewing. This is the function of saliva, which can lubricate these foods well, make them enter the digestive tract faster, and also help oral chewing and reduce the difficulty of chewing.
Third, lubrication In fact, the biggest role of saliva is lubrication. In normal times, we often find that if we keep our mouth closed for a long time, a lot of saliva will accumulate in our mouth. This is because the mucous membrane in our mouth will continuously secrete saliva to ensure the lubrication of the mouth. In normal times, many people like to sleep or work with their mouths open, and then our mouths will be very dry. If we keep our mouths shut in time, this symptom will be relieved soon. This is what saliva does. Saliva is very important to us. Every tissue or semen in our body will play a great role in our body, so we must not dislike every tissue and organ in our body at ordinary times.