Why do mosquitoes bite blood vessels accurately?

Because your whole body is full of capillaries, mosquitoes"Keep your eyes closed"It can also pierce blood vessels.

It's because mosquitoes don't remember or don't remember, it's just a simple instinctive reaction.

For it, you are just a perceptible food source for moving limbs, as long as it still needs to eat, there are no distractions and better food choices, you will drive Zheng Ji away for a while, and it will still fly back to bite you when you turn around. If there are a lot of mosquitoes in the environment, just light a mosquito coil to clean the environment.

Mosquitoes find blood vessels with precision.

However, mosquitoes are not able to accurately find blood vessels on the surface of the human body, they are looking for blood vessels after piercing their mouths into the human body. After accurately finding the location of the blood vessels, the mosquitoes will frantically suck blood, and at this time there is an interesting phenomenon, that is, some people find that mosquitoes pee while sucking blood. This is true or false, when we take a closer look at mosquitoes sucking blood, we will find that this is true.

Let's take a look at the mosquito's mouthparts first, it is not what we see with the naked eye and think it is a device similar to a hospital needle, the mosquito's mouthparts are quite complex, there are many of them"Needles know the world", different"needles"There are different uses, some are used to pick up meat, some are used to inject anticoagulant substances, and some are used to suck blood.

This is because some people happen to be the ones the mosquito is choosing to bite.

Which are the people that mosquitoes like to bite?

1. People who have cholesterol or vitamin B in their blood. Mosquitoes don't want to eat blood, but sugary substances, and the reason why mosquitoes (female mosquitoes to be precise) bite people is just to improve their fecundity. This is because human blood contains substances that make mosquito eggs mature.

Female mosquitoes are more likely to be found in the blood when they have more cholesterol or B vitamins. The "chemoreceptors" on its tentacles are the tools to find the person to bite.

2. Fat people, people in dark clothes who absorb heat, and people who have a lot of secretions. Mosquito bites are affected by three factors: first, the carbon dioxide exhaled from the respiratory tract is the source of the mosquito's directional odor, which the mosquito uses to find the person and then bite the mosquito.

The second is heat, fat people are more likely to be bitten by mosquitoes, and dark clothes absorb heat, which is also easy to attract mosquitoes. The third is excrement, mosquitoes love to bite people with rough pores and sweaty people. Generally, men are more attracted to mosquitoes than women, young people are more likely than the elderly, and healthy people are more attracted to mosquitoes than sick people, because there are more secretions on the surface.

And children have a strong metabolism and are favored by mosquitoes.

3. In addition, when women come to menstruation, the changes in secretions are more attractive to mosquitoes. After exercising, sweating will attract mosquitoes, so experts suggest that it is best to take a shower as soon as possible after exercise, and the less sweat, the less mosquito bites.

Because mosquitoes want to drink human blood, only that certain part of people are human beings, and nothing else is human beings.

Arteries are blood vessels that carry blood from the heart to organs throughout the body. The aorta begins in the left ventricle and gradually divides into many branches of varying sizes that spread throughout the body. The pulmonary artery originates in the right ventricle and divides into the left and right pulmonary arteries before entering the lung tissue on both sides.

The aorta carries more oxygenated arterial blood from the left ventricle throughout the body. The pulmonary artery carries venous blood containing more carbon dioxylite from the right ventricle to the lungs.

Veins are blood vessels that carry blood back to the heart, starting in capillaries and ending in the atria. Compared with the corresponding artery, the lumen of the vein is larger, the wall of the tube is thinner, the genus is more branched, and the blood volume is large. In the lumen of the vein, there is a half-moon-shaped pocket-like wrinkle wall that forms a centripetal opening, which is called a venous valve, which can prevent blood from flowing backwards, and the venous valve is mostly present in the limbs.

It is very dangerous to damage the arteries. Apparently mosquitoes destroy veins.

Most of them should be capillaries, and the walls of veins and arteries are thick, and there are not many places on the body surface, so they generally do not bite them.

Mosquitoes care about blood, whether there is a problem with the blood or not. Because the female mosquito must suck blood, the egg cells in the body can mature and reproduce.

It is precisely because mosquitoes bite indiscriminately regardless of whether there is a problem with their blood that they bite the sick and bite the healthy person, thus spreading the disease.

Even if there is a problem with the blood, it is still a nutritious meal for mosquitoes.