How do spiders spin silk? Why do spiders spin silk?

Organs with silk-strapped nets.

The spider's abdomen has 3 pairs of protrusions, called the textile apparatus, and there are many textile tubes on the textile apparatus that communicate with the silk glands in the body, which are at the posterior end of the abdomen and are connected to the textile organs on the surface through many microtubules.

The principle is that spiders have six glands in their abdomen; Known as silk spinning devices, various glands produce different types of spider silk, and the top of the gland has a spinneret with thousands of small holes on it, and the liquid sprayed out condenses into viscous and tense spider silk when it encounters air.

Spiders spin silk because it has an organ that spins silk and webs. The spider's abdomen has 3 pairs of protrusions called looms. There are many textile tubes on the textile that communicate with the silk glands in the body.

The silk gland is at the posterior end of the abdomen and is connected by many microtubules and superficial textiles. The silk glands secrete fluid-like bone proteins, which are fine, tough, and elastic. When this bone protein is ejected, it hardens into silk threads when it encounters air, and layers of silk threads can be woven into a net.

The spider spins silk mainly by the three pairs of protrusions at the back of the abdomen, which are its spinners. The spinning tube is adjacent to the silk gland, which can secrete liquid bone protein, which is very tough and elastic, and turns into silk threads when it encounters air. Many plants can use silk threads to build nets, and when the prey touches the net, they will be cucked, and the plants will eat the food that falls from the net according to the vibration of the signal wire.

Spiders can spin silk is an animal instinct, spinning silk can protect themselves, block enemy attacks when encountered, and at the same time can also use their spit silk to catch prey.

There are organs in the spider body that can spin silk webs, the abdomen of the spider has 3 pairs of protrusions, called the textile, there are many textile tubes on the textile and communicate with the silk glands in the body, the silk glands are at the back end of the abdomen, and are connected by many microtubules and the textile on the surface, which can secrete liquid-like bone protein, after the bone protein is sprayed out, it will harden when it encounters air, becoming silk threads, and layers of silk threads are woven into a web.

The principle of spider spinning:

There are six types of glands in the abdomen of spiders, called spinners, various glands produce different types of spider silk, and there are spinnerets at the top of the glands, on which there are thousands of small holes, and the liquid sprayed out condenses into viscous and tense spider silk when it encounters air.

Most spiders have venom glands, and there are two types of chelicerae and chelicerae that move up and down, and spiders that hunt on the ground and build webs in the air sweep like pincers. No antennae, no wings, no compound eyes, only one eye, generally 8 eyes, but there are also eyes, some genera even have no eyes, in terms of the color and function of the eyes, and divided into night and day.

Spiders spit out of their tails.

Spiders spin silk because their bodies have web-spinning organs, and the three pairs of protrusions on the spider's abdomen are called spinders. There are many textile tubes on the textile that communicate with the silk glands in the body. The silk gland is at the posterior end of the abdomen and is connected by many microtubules and superficial textiles.

These silk glands secrete fluid-like bone proteins, which are fine, tough, and elastic. When this bone protein is ejected, it hardens into silk threads when exposed to air, and layers of silk threads can be woven into a net.

Extended Materials. Spiders are the most abundant predatory natural enemies in terrestrial ecosystems, and their role in maintaining the stability of agricultural and forestry ecosystems cannot be ignored. The body is 1 90 mm long, and the body is divided into two parts: cephalothorax (anterior) and abdominal (posterior), and the cephalothorax is covered with dorsal armor and chest plate.

There are two pairs of appendages in the cephalothorax, the first pair is chelicera, with chelicera, and the tip of the chelicera has a toxic gland opening; The chelicerae of the rectal palatal suborder move anteriorly and backward, and the lateral and opposite movements of the palatal suborder; The second pair is whiskered, which are foot-like in females and immature males to hold food and act as sensory organs.

Because spiders are highly sensitive to changes in environmental factors including habitat structure, habitat type, wind, humidity and temperature, they can be used as indicator groups to monitor habitat and biodiversity changes, and their species composition and population changes have become important indicators for environmental monitoring, which can well reflect the process of environmental change and its impact on biodiversity.

Uses of spider webs:

1. Spider webs can be used to stop bleeding and eliminate warts. When there is bleeding in a certain part of our body, a small amount of spider webs can be kneaded into a ball and applied to the bleeding area to stop the bleeding.

2. Spider web is the hunting ground of spiders, because spider webs are strong and can stick flies, gadfly, mosquitoes, beetles and many other pests and become a delicacy for spiders.

3. Some spider webs are stronger than steel wires of the same weight, and their elasticity is also higher, which can be used to make bulletproof vests or artificial tendons and other items.

Definitely, but only about half of all spiders weave webs. Some spiders spin silk to help escape, such as spinning silk wraps to protect themselves, and such as from the ceiling.

Hang a wire into the air or to the ground. What's the secret of spider spinning?

Different spider silk has different characteristics such as strength, elasticity and toughness, but through comparison with natural materials and synthetic materials, it is found that spider silk is much stronger than them, and the tensile strength of each spider silk.

It is twice as elastic as steel, and it is more elastic than man-made fiber.

Much better. For example, spider webs.

It can be extended up to 10 times the original length, while nylon will break once it is extended to 20 times the original length.

Through observation, it is found that each spider is followed by a spider silk, which we call traction silk, which can be said to be the lifeline of the spider and plays a very important role in the spider. When the spider falls from above, it acts as a safety rope to ensure the safety of the spider's life; When the spider encounters danger, it acts as a ** line to transmit an alarm to the spider in time to ensure that the spider escapes in time; At the same time, the most important radial radius line of the spider web is also composed of traction wires.

There are more than 40,000 species of spiders in the world, and not every one of them can build webs, but almost all of them can spin silk. Because there are several pairs of "looms" at the end of the spider's belly. It was from the small holes that the spider silk flowed out of it.

Its composition is protein, which is similar to silk, and when it first flows out, it is still a kind of "glue", but as soon as it touches the air, it immediately hardens into silk.

There are tens of thousands of species of spiders in the world, some of which do not spin silk, and there is a desert spider in the Sahara Desert that does not spin silk.

All spiders can spin silk, because spiders have the function of spinning silk, so spiders can spin silk.

v There are spiders that do not spin silk: long-legged blind spider Geographical distribution Asian mode of reproduction Oviparous. Habits Body shape characteristics The body length is generally less than 5 mm, but the foot distance can reach more than 10 cm.

Most blind arachnoid animals have elongated feet; There is no clear separation between cephalothorax and abdomen; Do not spin silk. Phytophagous species have detailed steps, and there is no obvious specialization of the upper jaw and tentacles; Carnivorous ones have stubby feet, and the upper jaw and tentacles specialize into pincer-like predatory structures.

Spiders basically spin silk, and the chef should be the foundation of spiders' survival, spiders spin silk and build webs to obtain food.

Yes, because they are all one species, and the methods of predation are the same, unless there are very few that are caused by some reason.

Definitely, one of his most basic functions is toast, and his seems to be very good.

Spiders are silk that comes out of poop. The cicada is a silky ......

The spider's silk is not spit out of the spider's mouth, it is pulled out

There are multiple silk glands at the tail end of the spider's abdomen, and the raw material of spider silk, silk protein, is usually stored in the silk gland in the form of liquid. In addition, the spider has 3-4 pairs of organs called spinners in the abdomen, and its textile tubes communicate with the silk glands, and when needed, these fluids will flow out of the silk glands, through the textile tubes into the spinl, and then be expelled into the air. The spider silk, which was originally liquid, hardened quickly in the air and became the silk thread form that we see every day.

When making spider silk, spiders usually need to fix the silk liquid at one point and then move their bodies quickly to pull the silk liquid into a thread shape, so to be precise, spider silk is not spit out, but "pulled" out. If the spider silk is removed from the fixed point, or the spider's abdomen is immobilized so that it cannot move, the spider will not be able to produce the spider silk properly.

The strength of the spider silk

Someone has done a special study and found that the strength of spider silk is much higher than that of steel wire of the same thickness. Spider webs can remain unscathed even after stopping fast-flying flying insects, and it is estimated that it only takes a pencil-thick spider silk to stop a Boeing 747 in flight.

Spider silk is also outstanding in terms of elasticity, flexibility, heat resistance and ultraviolet resistance, and is called "biosteel" by scientists. In addition, spider silk also has a very wide range of application prospects in clinical medicine and artificial organs.

The spider's abdomen has a magical silk sac, which resembles a bathing shower with many small holes, and these small holes are the silk spinners.

The root of the silk gland is connected to the silk gland, which stores a large amount of protein, and when they need to "spin silk", they will mobilize the silk gland to secrete protein mucus and shoot out. The moist mucus dries quickly when it encounters air, and under the action of internal pressure, it is continuously pulled into spider silk.

Spider silk is the toughest protein fiber, with more than 2,500 spider silk fibers in one silk, and its strength is second to none of all natural biomaterials, with three times the tensile strength of bone.

However, such a high-quality material is very delicate when it is made by spiders, and its diameter is usually less than 2 microns, only one-thirtieth of a human hair.

If someone can really spray pencil-sized spider silk in an instant like Spider-Man, then it is not impossible to use it to pull tens of thousands of tons of cruise ships, or moving trains.

The main material of spider silk is a special protein fiber, and the amount of spider silk that a spider can spit out at one time is mainly determined by how much protein it has in its body. A normal webweb spider can spit out up to 700 meters of silk at a time, and when the protein in the silk sac is depleted, they will no longer spit silk.

However, they do not die because of this, but will hunt for protein-rich foods such as insects everywhere to replenish the silk sac with silking material. Once the protein is replenished, they can continue to spin again.

Another way to get them to replenish their silk quickly is to eat the excess silk, the spider's digestive system is very sensitive to protein, and it is easy to completely digest and absorb them into the amino acids that the body needs. However, spiders can only spit out their own spider silk, and can't do other spiders. Therefore, hunting insects in large quantities is their main method of obtaining protein.

Of course, under natural conditions, spiders know how to do what they can and properly preserve some protein to maintain their normal life activities. But if someone deliberately "squeezes" them, it will make the spiders very weak, and when they can't pull out the silk, they will starve to death.

The part where the spider spins silk has a pair of spinners at the back of the abdomen. It usually sticks flat on the abdomen and can be seen when spinning. There are several pairs of "textiles" at the end of the spider's belly, and the spider silk flows out of the small holes of the weaver, and when it first flows out, it is still a sticky "glue", and when it comes into contact with the air, it immediately hardens and becomes silk.

All spiders live by the use of silk, silk secreted by the silk gland cells, in the gland cavity is a viscous liquid, through the spinning tube out, when it encounters air quickly condensed into a filament, the specific gravity of the silk is, strong and elastic.

When the spider needs to volley the web between two objects, it will first release a silk to float in the air, and if the other end of the silk is blown to the other end by the wind and sticks, the spider will tighten the silk as a bridge, and spit the silk back and forth in the air to weave a complete web. Spiders are the most abundant predatory predators in terrestrial ecosystems. The body is 1 90 mm long, and the body is divided into two parts: cephalothorax and abdomen, and the cephalothorax is covered with a dorsal armor and a chest plate.

When the spider needs to volley the web between two objects, it will first release a silk to float in the air, and if the other end of the silk is blown to the other end by the wind and sticks, the spider will tighten the silk as a bridge, and spit the silk back and forth in the air to weave a complete web. Spiders are the most abundant predatory predators in terrestrial ecosystems. The body is 1 90 mm long, and the body is divided into two parts: cephalothorax and abdomen, and the cephalothorax is covered with a dorsal armor and a chest plate.

Spider silk mainly comes out of the small hole of the spider's tail, the tail part of the spider, there is a sac, the spider will secrete some mucus through the protrusion at the tip of the silk sac, when these mucus encounter air, it will soon condense into a small filament. The web made of this silk will be very sticky, and when all kinds of small insects fall into the spider web and cannot escape, it becomes the food of the spider. Now you know, we've all seen Spider-Man

Definitely, but only about half of all spiders weave webs. Some spiders spin silk to help escape, such as spinning silk wraps to protect themselves, and hanging a silk from the ceiling to the air or the ground. What's the secret of spider spinning?

Different spider silk has different characteristics such as strength, elasticity and toughness, but through research and comparison with natural materials and synthetic materials, it is found that spider silk is much stronger than them, and the tensile strength of each spider silk is twice that of steel, and the elasticity is much better than that of man-made fibers. For example, a spider web can extend up to 10 times its original length, while nylon breaks once it reaches 20 times its original length.

Through observation, it is found that each spider is followed by a spider silk, which we call traction silk, which can be said to be the lifeline of the spider and plays a very important role in the spider. When the spider falls from the top of the cover, it acts as a safety rope to ensure the safety of the spider's life; When the spider encounters danger, it acts as a ** line to transmit an alarm to the spider in time to ensure that the spider escapes in time; At the same time, the most important radial radius line of the spider web is also composed of traction wires.