What is the whole process of mosquito bites?

Once the target is confirmed, the mosquito will carefully land on the human body, in order not to be detected, it will spread its slender legs very far apart to avoid excessive concentration of pressure, thus disturbing the sensitive nerves underneath. The four legs in front are placed on the **, and there are receptors for sensing the vibration of the human body**. The average penetration force of the mosquito mouth needle** is microbull, which is comparable to the weight of the mosquito.

In the process of further penetration, the force of the mouth against ** is much smaller than this penetration force, so that people are unaware.

Before the mouthparts penetrate the dermis, an anesthetic secreted by the salivary glands is injected, causing the nerves to perceive the nerves slightly. Formic acid is then injected to destroy the normal structure of the blood vessel wall, making it easier for the mosquito's upper lip blood-sucking needle to be inserted. At this time, the mosquito will bend the lower lip, support the body, and use the blood-sucking needle to puncture the ** bend around to find the right capillaries.

The muscles in the head squeeze the mouthparts and suck blood into the mosquito's stomach. After the mosquito starts sucking blood, it is injected with an anticoagulant to prevent the blood from clotting. Under normal circumstances, it takes more than 20 seconds from the time it falls to the time it starts to suck blood.

Here's how mosquitoes bite:

Only female mosquitoes bite, but they don't bite every time they encounter a person. It bites and sucks blood, mainly because it needs human blood to reproduce the next generation, and uses the blood it sucks to lay hundreds or thousands of eggs. The mosquito relies on its tentacles and sensors on its three pairs of legs.

When a person is asleep, he exhales carbon dioxide, and the mosquito slowly follows the smell, buzzing over his head, while using its proximity sensor to measure the humidity, temperature, and composition of the sweat in order to determine whether it is a suitable target.

Mosquitoes

Mosquito (scientific name: culicidae), a mosquito of the family Mosquitoidae, is a small flying insect with stinging and sucking mouthparts. Multicellular organisms with elongated bodies and feet, usually females feed on blood, while males feed on the sap of plants, preferring to inhabit hidden, dark and poorly ventilated areas, found on all continents except Antarctica.

The first major category is Anopheles mosquitoes, the characteristics of Anopheles mosquito adults are that most of the wings are spotted, the body is mostly gray, the body is staying, and the finger surface of the stay is at a certain angle, and it is mostly active at night; The larvae of Anopheles sinensis mosquito breed in large stagnant water, such as rice paddy fields, swamps, reed ponds, slow-flowing ditches, etc.

The second major category is Culex mosquitoes, the characteristics of Culex mosquito adults are that their wings are mostly spotless, their body color is brownish-yellow, and when they stay, they tend to maintain a balanced state with the staying surface, and they are in a parallel state, and their activities are mostly at night; A genus of the subfamily Culae mosquitoes. Commonly known as Culex mosquitoes. It is widely distributed all over the world and is the second largest genus of the mosquito family, with more than 800 species and subspecies known.

The reason why mosquitoes bite people is that mosquitoes cannot synthesize proteins that can produce egg cells on their own, so they need to be obtained from the blood of mammals, that is, mosquitoes bite people in order to reproduce. So as long as the surrounding environment is not suitable for mosquito breeding, mosquitoes will not bite, this temperature is about 24 degrees Celsius, so only need to make the indoor temperature below 24 degrees Celsius, mosquitoes will not bite, but it is not excluded that some crazy mosquitoes still want to bite.

Mosquitoes are pierced into people with 6 needle-like structures, and these short needles are the centers of the mosquito's mouthparts. > these short needles suck human blood in the same way that they draw blood; The mosquito also releases saliva containing anticoagulants to prevent blood from clotting, so that it can feast peacefully. When the mosquitoes are full of food and drink and float away, all they leave behind is an itchy lump.

However, the itchy sensation is not caused by a short needle pricking or chemicals in the saliva. We feel itchy because the body's immune system releases a protein called histamine to fight foreign substances, and this immune response triggers an allergic reaction at the bite site. Histamine causes swelling of the tissues around the bite when blood flows to the bite site to speed up tissue recovery, and the intensity of this allergic reaction varies from person to person, with some people having a more severe allergic reaction to a mosquito bite.

Only female mosquitoes bite mammals because they have to suck blood every three or four days to get the protein they need to make eggs; Male mosquitoes mainly feed on nectar, while female mosquitoes use animal body heat and physiological changes to search for targets, which may be why human ankles and feet are more commonly bitten by mosquitoes, because the blood vessels in these parts are closer to the body surface, so more body heat is released.

<> mosquito bites will first explore the surface of the **lip flap and puncture it repeatedly** in order to select the most appropriate blood-sucking position, and the selection criteria are mainly based on the distribution density of the microvessels in the **. When the mosquito sucks blood, it is supported by the lower lip, and then the mouth needle is pierced into the mouth, which is a structure composed of the upper lip, the big jaw and the small jaw that can operate as a whole, and the lower lip left on the outside of the ** is bent inward into an arch shape. In addition, the saliva of mosquitoes contains a vasodilating and anticoagulant substance, which makes it easier for blood to flow to the bite site.