Question 1001: Is the spider’s blood blue?

Spiders are nature’s mysterious 8-legged predators. That strange has attracted many scientists to study about them and give equally strange results.
Spiders are in the arthropod layer with ticks, scorpions … they have no vertebra, no jaws, the body is divided into two parts and possesses 8 legs. The entire body of this predator was evolved to fight larger animals, in addition to prey and destroy other invertebrates.

Professor Chris Buddle of the Department of Insect Ecology at McGill University, Canada pointed out that: “Out of nearly 40,000 species of spiders in the world, only about 10 can be dangerous to humans. Even venomous species are very unlikely to come into contact with humans, let alone attack us. ” Are spiders any color? It sounds strange, but spiders don’t really have blood. What they have is called “Hemolymph”. In fact, our blood is based on iron-containing hemoglobin molecules, so they are red. However, the blood of the spider is based on the protein called Hemocyanin derived from copper. This hemocyanin has a fairly clear color, but when exposed to oxygen it turns dark blue. Spiders cannot digest food in solid form They have to pump a liquid into their prey to soften their internal organs and tissues. After everything is softened completely, spiders can suck the contents inside to nourish their bodies. Spiders can control their blood pressure while on the move Spiders not only use muscles to move, but they also know how to combine blood pressure to walk or jump, depending on the species. Spiders contract muscles in the nipples and increase hemolymph pressure in the legs, which makes it easier for them to expand the area of ​​movement. This sudden increase in pressure also caused their legs to leap in different directions. Spiders have no vertebrae Spiders have no bones. They have only a set of sclera surrounding the organs and blood. This makes them classified as invertebrates or non-vertebrates. However, spiders are not the only species with sclera. Practically all insects and arachnids have that set of sclera. Having a set of sclera allows these organisms to grow more and periodically they need to “strip off” or replace their sheath. They can also re-develop the body in a short time. All invertebrates (even spiders) are very vulnerable before their sclera can harden. There is a species of spider that actually lives in the water There is a species of spider that is adapted to live in water, also known as the “Diving Bell” spider. Special soft hairs surround their bodies in the shape of air bubbles that provide oxygen in this particular habitat. Spiders are also a vegetarian Bagheera Kiplingi Spider (Kipling Spider) was discovered in the 1800s, their main food is acacia buds and plants. Sometimes this spider also eats larvae. It is also the only vegetarian spider in the world. Spiders will eat back their old spider silk When the silk loses its cohesion or becomes too dirty, the spiders often eat it and use nutrients from the old silk to create a new web. Do you see ? The spiders recycle them… in their own way. Antarctica has no spiders. Antarctica is inhabited by spiders. These are simply places where the climate is so extremely cold that they cannot do the usual metabolic processes. N What will poisonous bites look like? However, you should still be aware of some spiders with venom that carry extremely dangerous venom. The red back spider in Australia has a venom that causes nerve damage to humans for 24 hours. The black widow spider is famous for its poisonous bite, affecting the relatively strong nervous system, but it is difficult to cause death. When biting the spider spider, the wound becomes infected, leading to blood infection and gangrene. Tarantula large black spider in the rainforest will make people fall into a coma immediately. 6-eyed sand spider will cause local clotting and wound necrosis.