Do insects have a heart? Detailed answer

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Do insects have a heart? Detailed answer

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Do insects have a heart?

It is hard to believe that such tiny creatures as insects have a heart and lungs, nerves and a brain. But nevertheless it is so. The large nerve center in the head of insects is their brain. It receives sensations and sends a signal to the muscles, causing them to work. This is done automatically, because all the actions of insects are automatic. The blood of insects is not red like that of humans. It cannot tolerate oxygen, which gives blood its red color.

The heart of an insect is part of a long tube that runs through the body, just under the skin. The tube ends in the brain. Along the entire length of this tube there are tiny holes with valves. Blood enters the heart through these openings. The heart contracts and forces blood to flow to it. In the head, blood bathes the brain and flows back through the body. When moving backwards, blood also enters the organs of the body, muscles and the nervous system. She brings digested food with her and picks up waste products.

You can observe the heart in some species of insects. If you carefully examine the caterpillar of the winter scoop, the larva of the mosquito or some other caterpillars, you can notice the heart in the form of a tube along the entire back, observe how it beats. You will notice that the heart beats faster when the insect is warm and slower when the insect is cold.

A very interesting fact is connected with the power of insects. Considering their small size, they are surprisingly strong. The reason for this is that insects have a lot of muscles, and they are very powerful. A human has about 800 muscles, and a grasshopper has about 900!

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why do insects hit lamps?

Insects navigate in flight around the world. They fix the source - the Sun or the Moon - and maintain a constant angle between it and their course, taking a position in which the rays always illuminate the same side. However, if the rays from the heavenly bodies are almost parallel, then from an artificial light source the rays diverge radially. And when the insect chooses a lamp for its course, it moves in a spiral, gradually approaching it.

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