You must also feel about the protective function of taste and smell on the human body

The protective effect of taste and smell on human beings is mainly manifested in ensuring food safety!

The sense of smell and taste can tell whether a food is good or harmful to the human body with a high probability.

How can the human sense of smell or taste be able to judge the nature of these foods?

I think it's mostly the result of natural selection. It is conceivable that if a person's sense of smell and taste cannot intuitively judge the nature of food, especially harmful substances, he is likely to be injured or even die due to the consumption of harmful substances. Normal people can determine the nature of substances in a large proportion, for example, normal people often feel that the taste of substances harmful to the human body is bitter, smelly and other unpleasant.

For example, the feeling of energy substances such as sugars is expressed as a pleasant feeling such as sweetness, and the smell of lard that is felt when there is a lack of animal fat for a long time is fragrant, and if it is too greasy food (or suffering from liver disease), the smell of lard is disgusting.

The sense of smell can also be combined with experience, for example, when a person smells the smell of gas, he will feel the danger coming, so he can take measures to avoid danger and protect himself.

You're in 5th grade, too, and I'm writing it! The subject matter I use is:

studied hard when he was a child, however, Hua Luogeng was called to see the shop (a shop selling cotton).

For the sake of an internationally renowned number of my country, once, a woman went to buy cotton, Hua Luogeng was calculating a math problem, and the woman said how much cotton she wanted? However, the diligent Hua Luogeng didn't hear it, so he answered the answer to the calculation, and the woman screamed: "Why is it so expensive? At this time, Hua Luogeng knew that someone had come to buy cotton, so he said**, and the woman bought a bag of cotton and left. Hua Luogeng was about to sit down and continue to count, only to find that the straw paper that had just calculated the topic was taken away by the woman.

This can be a big deal for Hua Luogeng, so desperate to chase, a yellow bag master saw the internationally renowned modern mathematician Professor Hua Luogeng.

So he let him take the car (because they knew each other), and finally caught up, Hua Luogeng said embarrassedly: "Auntie, please ......."Please give me back the straw paper", and the woman said angrily, "I paid for it, not you".

Hua Luogeng was in a hurry, so he said: "Otherwise! I paid for it."

When Hua Luogeng reached out to take out the money, the woman seemed to be moved by this child! Not only did he not ask for money, but he also returned the straw paper to Hua Luogeng. At this time, Hua Luogeng was slightly relieved, and after returning home, he calculated ......

The human sense of smell has deteriorated a lot, and people sacrifice night vision for the sake of color vision, and felines have "reflective eyes" that see six times more than humans.

My experience: The protective function of taste and smell on the human body is mainly reflected in the safety of food. Taste: In general, foods that are harmful to the human body are bitter. Sense of smell: In general, gases that are harmful to the human body are smelly and unpleasant.

That's how I wrote it, I don't know if it's right, hehe!

Most of the smells and tastes that the human body feels comfortable are beneficial to the human body, so as to avoid eating toxic and harmful foods and inhaling toxic and harmful gases.

All human sensory organs will play an important role in human physiology, in addition to bringing various feelings, sometimes it will also play a protective role in people, such as using people's disgust for odor sensation can add a small amount of butanediamine to petroleum liquefied gas, butanediamine is also called cadaveric ammonia, extremely smelly, if the LPG leaks, people will quickly perceive. On the other hand, if perfume is added, it is possible for one to die in sweet intoxication, isn't it?

3. The sense of smell can make a person perceive the world and make a person live a better life. In fact, I have to say that the sense of smell is relative to the sense of taste, the sense of smell is often able to make people perceive a larger world, and the larger range of perception compared to the sense of smell can help people live a better life, but the sense of taste is more important than a person's life, and it can make a person perceive the essence of food, which can give life to continue.

In fact, I have to say that people's sense of smell and taste are equally important, but in special circumstances, the two also have a certain emphasis, for us humans, the sense of smell and taste as one of the perception of touch, the status of the two is equally important, so for a normal person, the two are indispensable, but under relative conditions, the sense of smell can bring a person greater perceptual space, so it is equivalent to taste, under specific conditions, it is often more important than taste.

In my opinion, people's sense of smell and taste are equally important, if you don't have a sense of smell, you will encounter a big obstacle in your life, and if you don't have a sense of taste, it is very unfriendly to your stomach, so both are very important.

I think people's sense of smell is more important, and having a sensitive sense of smell can make people distinguish the presence of food.

Personally, I think the sense of taste is more important, and if you lose your sense of taste, then nothing you eat will taste, and it will be a very scary thing.

The sense of smell is very important, and when you smell it, you don't continue. Because they also know that they shouldn't move on, that this substance is not very good.

According to the analysis of the topic, it can be seen that the odorous substance will first combine with the odor receptor to make the receptor cell excited, indicating that the odorous substance belongs to the chemical signal, and after combining with the receptor, the membrane potential becomes negative outside and positive inside, forming an action potential, and producing excitement, therefore, the change in the process is a chemical signal electrical signal

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