Why do people have two nostrils? A person has two nostrils, do the two nostrils work at the same tim

This is the same reason that man has two hands and two feet.

This is true not only for people, but also for many animals and plants in nature.

It is believed that the reason for the prevalence of such even numbers is that the principles of nature's creation are the simplest and most symmetrical.

Simplicity avoids wasting resources, and two eyes are enough to ensure an effective field of vision, so there is no need for a third.

Symmetry has a certain aesthetic significance, it also prevents accidents, and if one eye is accidentally injured, there is also one that can hold the ground.

The same goes for problems with the nostrils.

It seems that even the lower animals have two nostrils, from which the mammals must have inherited. As for why there are two lower animals, it must be the result of natural selection, and if one is damaged, it is estimated that it will not work.

Elephants have two nostrils.

This is to remind people at all times that they can't breathe through one nostril.

Because it's more symmetrical, don't you also have two ears and eyes?

It's more symmetrical, and it also prevents a blockage, and there's a backup.

For the sake of beauty and practicality.

It's much easier to breathe than with the other 7 orifices, isn't it?

One is blocked and the other is blocked, otherwise it will be released.

Hehe. You're asking a genius question.

I said, "How did I find you so talented?"

You have a lot of questions.

Ha ha. I don't know.

It's like this question, son: "Dad, why does the red-crowned crane have to put away one foot to sleep?" ”

Dad: "Silly son, wouldn't it fall if both of them were put away?"

Ha ha. It's funny.

One nostril is an elephant.

Yes, both nostrils work at the same time, of course, sometimes only one nostril works, but in rare cases, after a cold, both nostrils are blocked and do not work.

Of course, both nostrils work at the same time, and if only one nostril works, it will be very tiring, and some will not be able to breathe.

Yes, if you have doubts, you can also try it yourself, and you will find that there is gas flowing on both sides.

The two nostrils of a person work at the same time, and if we put our fingers under the nostrils, we can find that there is a flow of gas in both nostrils when inhaling and exhaling.

Yes, both nostrils work at the same time, and you can feel it by breathing on your own.

It doesn't work at the same time. One rests and one work, so that they come in turns.

01 This is to allow the human body to ventilate normally, so that one nostril is too tired to work. Alternate the two nostrils, one to breathe and the other to recharge and prepare for the next cycle. At the same time, since the two nostrils feel the difference in smell every time they breathe, they also produce a three-dimensional sense of smell, and we are more able to feel the world of smells.

We have two eyes and ears, and we all know what they do: these two eyes give us three-dimensional vision; The two ears allow us to pinpoint the location of the sound. We only have one nose, but why do we have two nostrils?

Do our two nostrils have a similar function? Actually, it's not. We have two nostrils, but we only use one nostril every time we breathe.

This is because the turbinate mucosa of the nostrils has a lot of erectile tissue made up of blood vessels and connective tissue, and the erectile tissue of the two nostrils will undergo some rhythmic contraction and expansion, so that one nostril is unobstructed and the other is blocked, and it will cycle every few hours. This cycle is mainly controlled by the nerves of the hypothalamus in the human body. Since the total resistance of air into the nose on both sides is always constant and does not affect our breathing, we are not aware of it at all.

The function of the two nostrils is to allow our body to ventilate normally, so that one nostril is too tired to work. By alternating the two nostrils, one breathes and the other recharges in preparation for the next cycle. At the same time, since the two nostrils feel the difference in smell every time they breathe, they also produce a three-dimensional sense of smell, and we are more able to feel the world of smells.

Why do people have two nostrils.