Blue blood. Which animals have blue blood? Why is the sloth called that?

These are octopuses - cousins ​​of oysters. Their blood is unusual - blue! Dark blue when oxygenated and pale in the veins. The color of the blood of these animals depends on the metals that are part of it.

In all vertebrates, as well as in earthworm, leeches and house flies have red blood. In the blood of many sea ​​worms ferrous iron was found, and therefore the color of the blood of these worms is green. Octopuses, as well as spiders, crayfish and scorpions, have blue blood. Instead of hemoglobin, it contains the substance hemocyanin, with copper as the metal. Copper gives the blood a bluish color.

Octopuses have two more amazing properties. First, they have not one, but three hearts! One drives blood throughout the body, and the other two push it through the gills. The second is that nature has endowed them with a grater, which they use to make puree from crabs and fish. The esophagus of octopuses is very small, therefore, despite their large appetites, they cannot swallow prey larger than a forest ant. This is where their “graters” help them. The fleshy tongue of an octopus is covered with tiny teeth. They grind food, turning it into pulp. Food is moistened by saliva in the mouth and enters the stomach.

Everyone probably knows that with the onset of autumn, birds leave their homes and fly away in huge flocks. distant edges for the winter. And in the spring, when the ground thaws and the trees begin to swell with buds ready to bloom, the birds also return.

Along with the rest of the bird flocks, the Arctic Long-tailed Tern also flies home. This is a small bird with a black flirty cap, a red beak and red legs. The tern does not stay, like many other birds, in areas middle zone, and together with the northern birds flies further. She chose areas for her nesting sites Far North– Alaska, Arctic islands of Canada, Greenland. The long-tailed tern is also found in northern Siberia.

But the most surprising thing, of course, is not this. In autumn, leaving the cold tundra, the tern flies south, so far that it again ends up in places solid ice and snow. And she winters in Antarctica. Thus, our Siberian Arctic terns fly 32 thousand kilometers to get back to their favorite cold places.

They try to avoid warm countries, some flocks sometimes make a detour of even several hundred kilometers, just to fly over cold areas.

Scientists believe that this predilection of terns for cold climates can be explained very simply. Arctic long-tailed terns feeding small fish and crustaceans, and them in cold water more than in warm. Obviously, there are other reasons that still remain a mystery.

Why is the sloth called that?

They called him that for a reason: he can hang or swing motionless on a branch for hours without doing anything, and even sleep and feed in this position. He seems too lazy to even move!

Hanging is very convenient for a sloth: all you have to do is grab onto a branch with your long, strong hooked claws. The sloth's homeland is green forests on the banks of the Amazon in South America. There is also enough food for him there: the sloth eats leaves and bark of trees.

This is one of the most interesting animals existing in nature.

What is a reptile?

Reptiles (reptiles) are cold-blooded creatures, the skin of most of which is covered with horny scales. They breathe with the help of their lungs and have an unstable body temperature. They reproduce mainly by laying eggs. There are four categories of reptiles: turtles (sea and land), crocodiles, hatterias (beaked), and snake lizards (scaly). The largest representative of the reptile family is the South American anaconda snake. Its usual length is 7–8 meters; there are specimens up to 10 meters long.

The brightest and most “attractive” reptile is the crocodile. Its habitats are Africa, Asia and Australia. Some reptiles are extremely poisonous and dangerous. For example, the coral snake, which lives in South America. However, poisonous snakes can also be found in Southern Europe, in rocky, mountainous places. Among our “countrymen” the most terrible is the gray viper, whose bite is fatal. Harmless snakes are almost ubiquitous and can be easily distinguished from the same viper by their oval head (the viper has a triangular head) and a simpler pattern on the skin.

This photograph shows the process of taking blood from a real animal in medical laboratory USA.
They write that this process does not cause any harm to the animal.
Who knows what animal on earth has blue blood?

Have you ever heard of such an amazing living creature as the horseshoe crab? On English language its name literally sounds like “horseshoe crab,” but the horseshoe crab (lat. Xiphosura) has nothing in common with either an ordinary crab or, of course, a horseshoe. At the same time, in terms of its position in the natural world, the horseshoe crab is related to crabs and even spiders.

In the scientific community, the horseshoe crab is better known as Limulus polyphemus. Translated from Latin, “polyphemus” means “many-eyed,” which best characterizes the appearance of this creature. The horseshoe crab has four eyes, two of which are on the side and two in the front. The front eyes, at the same time, are so close to each other that they seem to merge into one eye.

According to scientists, horseshoe crabs can be classified as fossil animals that have survived to this day. The history of the existence of this living creature spans two hundred million years, and during this time appearance horseshoe crabs have remained virtually unchanged. There are very few of them in nature unique examples, so attractive for scientific observation and study.

The horseshoe crab's body is protected by a reliable shell, while its lateral eyes allow it to detect the slightest movement from all sides. The animal's tail has several spiny protrusions, which also make it possible to maintain balance in strong water currents. When turning over, the horseshoe crab quickly regains its previous position using the movement of its tail.

The horseshoe crab has six pairs of limbs, four of which help move along the seabed. In addition, the short limbs at the front allow the creature to hold and absorb food, while the longest hind limbs help the creature swim. The mouth opening of a horseshoe crab is hidden behind those four limbs, thanks to which it can move along the bottom.

Another surprising thing is that the horseshoe crab has no teeth. Being a complete omnivore, the horseshoe crab has to absorb food, tearing it into small pieces. Its main prey is carrion, algae, fish eggs, as well as all kinds of sea oysters and worms.

The respiratory apparatus of the horseshoe crab consists of gills consisting of one and a half hundred very thin plates that release and absorb oxygen from the water. The creature can breathe as long as its gills are kept in

Probably everyone still remembers from childhood that fairy-tale princes and princesses have blue blood. In folklore and in the same fairy tales it appears as a sign of nobility. However, in reality blue blood does not flow in the most noble creatures...

Red blood flows in the veins of almost all living organisms. The red color of blood is given by a special pigment - hemoglobin, consisting of gland and protein. The main function of hemoglobin is to transport oxygen through blood vessels.

Blood blue color flows in my veins spiders, scorpions, crabs, crayfish and all cephalopods (squid, octopus...). Unlike red blood, blue blood contains a pigment called hemocyanin. The basis of hemocyanin is another metal - copper, it gives blood Blue colour.

Since carriers of blue blood do not have blood vessels hemocyanin has many more functions than hemoglobin. In addition to the fact that the blue pigment very accurately measures and supplies portions of oxygen to the organs, it also regulates body temperature in accordance with the state of the environment.

The carriers of the most unique blood in the world are several species of sea worms. The main pigment of their blood consists of ferrous iron, therefore such blood has bright green color.

This photograph shows the process of taking blood from a real animal in a US medical laboratory.
They write that this process does not cause any harm to the animal.

Who knows what animal on earth has blue blood?

Have you ever heard of such an amazing living creature as the horseshoe crab? In English, its name literally sounds like “horseshoe crab,” but the horseshoe crab (lat. Xiphosura) has nothing in common with either an ordinary crab or, of course, a horseshoe crab. At the same time, in terms of its position in the natural world, the horseshoe crab is related to crabs and even spiders.

In the scientific community, the horseshoe crab is better known as Limulus polyphemus. Translated from Latin, “polyphemus” means “many-eyed,” which best characterizes the appearance of this creature. The horseshoe crab has four eyes, two of which are on the side and two in the front. The front eyes, at the same time, are so close to each other that they seem to merge into one eye.

According to scientists, horseshoe crabs can be classified as fossil animals that have survived to this day. The history of the existence of this living creature spans two hundred million years, and during this time the appearance of horseshoe crabs has remained virtually unchanged. There are very few such unique examples in nature that are so attractive for scientific observation and study.

The horseshoe crab's body is protected by a reliable shell, while its lateral eyes allow it to detect the slightest movement from all sides. The animal's tail has several spiny protrusions, which also make it possible to maintain balance in strong water currents. When turning over, the horseshoe crab quickly regains its previous position using the movement of its tail.

The horseshoe crab has six pairs of limbs, four of which help move along the seabed. In addition, the short limbs at the front allow the creature to hold and absorb food, while the longest hind limbs help the creature swim. The mouth opening of a horseshoe crab is hidden behind those four limbs, thanks to which it can move along the bottom.

Another surprising thing is that the horseshoe crab has no teeth. Being a complete omnivore, the horseshoe crab has to absorb food, tearing it into small pieces. Its main prey is carrion, algae, fish eggs, as well as all kinds of sea oysters and worms.

The respiratory apparatus of the horseshoe crab consists of gills consisting of one and a half hundred very thin plates that release and absorb oxygen from the water. The creature can breathe as long as its gills are kept moist.

Like fish and crustaceans, horseshoe crabs reproduce by spawning. When born, the small horseshoe crab does not yet have a tail and is, as it were, dressed in a soft shell. But after a month they grow out of the shell, which has time to harden, and often shed it. The length of an adult horseshoe crab can reach 60 centimeters, and, of course, it often has to shed its shells, which interfere with body growth.

The horseshoe crab is a real miracle of nature, which has come to this day from those distant times when there were not only humans, but also modern flora and fauna

And his blood is blue, because it contains not iron, like ours, but copper. Copper oxide and imparts blood to the horseshoe crab bluish tint. Horseshoe crab blood is used in medical purposes, a reagent is made from it to test the purity of medical preparations: if the preparation is contaminated with microorganisms or products of their activity, the blood coagulates.

To the question: Which animals have blue blood? given by the author Deliberate the best answer is: Octopuses are cousins ​​of oysters. Their blood is unusual - blue! Dark blue when oxygenated and pale in the veins. The color of the blood of these animals depends on the metals that are part of it.

All vertebrates, as well as earthworms, leeches and house flies, have red blood. Ferrous iron is found in the blood of many sea worms, and therefore the color of the blood of these worms is green.



Octopuses have two more amazing properties. First, they have not one, but three hearts! One drives blood throughout the body, and the other two push it through the gills. The second thing is that nature has endowed them with a grater, with which they prepare puree from crabs and fish.
The esophagus of octopuses is very small, therefore, despite their large appetites, they cannot swallow prey larger than a forest ant. This is where their “graters” help them. The fleshy tongue of an octopus is covered with tiny teeth. The cloves grind food, turning it into pulp. Food is moistened by saliva in the mouth and enters the stomach.
Copper was first discovered in living organisms in 1808 by the famous French chemist Louis Vauquelin, an outstanding analyst of his time. He conducted many studies of various substances and is considered one of the founders of chemical analysis.
Later, in 1834, the copper content of a number of invertebrate animals was determined. Its exact location is the hemolymph, which is blue in color. This discovery belongs to the Italian researcher B. Bisio.
So, blue blood again... The blue, and sometimes even blue, color of the blood of these animals is given by copper ion. Let us remember: many compounds of this element are blue, for example copper sulfate.
Blue blood of some vertebrates scientific literature It was first described by the famous Dutch naturalist Jan Swammerdam in 1669, but for a long time it was not possible to explain the nature of this phenomenon. In 1878, the French scientist L. Frederico named the substance that gave the blood of mollusks a blue color, hemocyanin (“heme” - blood, “cyana” - blue) - by analogy with hemoglobin.


Today we know: there is no heme here. The only known porphyrin in living organisms that contains copper is the bright red pigment turacin, found only in the feathers of the exotic African bird turaco. (It is curious that these birds, the largest cuckoos, are also called banana eaters, although they do not feed on bananas.)
Source:

Answer from Maria O[guru]
Octopuses are cousins ​​of oysters. Their blood is unusual - blue!

Answer from dewy[guru]
at the octopus.

Answer from Olya Moiseeva[guru]
in octopuses, because their blood contains a lot of copper

Answer from Neuropathologist[guru]
Octopuses, spiders, crayfish and scorpions.

Answer from Yoman Lomovskoy[expert]
Octopuses, as well as spiders, crayfish and scorpions, have blue blood. Instead of hemoglobin, it contains the substance hemocyanin, with copper as the metal. Copper gives the blood a bluish color.

Answer from Milanka F[guru]
octopuses, crabs, scorpions, spiders

Answer from Suspicious foreigner[guru]
Among the noble Spanish hidalgos, who did not mix with the Moors, during Arab rule over Spain. Their skin remained light, and the veins underneath appeared blue. This is where the expression “blue blood” comes from, in the sense of “noble origin.”