How does insect breathe?

Oxygen is one of the most important molecules needed to grow and maintain life. People and other mammals take oxygen respiratory. We breathe and inhale oxygen into our lungs, which then distracts oxygen into all tissues through blood flow. Other creatures in our world obviously do not have the lungs, so they cannot use this method to distract oxygen through their bodies. Especially the way insect breathes is interesting to study. These tubes have holes called spirals placed on the chest (chest) and abdomen. Oxygen passively enters the spirals, flows down the tubes and ends in a liquid located at the bottom of each tube that helps to dissolve the oxygen. This liquid then moves to other cells to provide oxygen to other cells in the insects. And this air does not provide the necessary oxygen to cells because insects lack the lungs. Instead of using air in the mouth to supply the lungs with oxygen, insects passively breathe. Must rely on the oxygen around them enters the SEducation of the spirals to get into the trachea to provide the necessary oxygenation of all their cells.

What makes the insect fascinating is that theoretically insects in a highly rich oxygen environment could become much larger than today's modern version. For example, many paleontologists suggest that many of our modern mistakes are small versions compared to giant insects that could roam Earth in prehistoric times. Due to the passive way of breathing insects, life cannot be supported if the insects are very large because there would be no way to properly oxygenate all cells. Scientists Beltj. The Earth had a much higher oxygen content, but which means that oxygen has proliferated for the beginning. This in itself could explain why the scary shed of the past was very large - they had more accessible air to “breathe”.

Given thatOxygen levels on the ground dropped, it would be advantageous for insects. Since the insects could not breathe so much, survival could be based on the fact that it is more compact to provide healthy oxygenation into all tissues. Although it should be stated that there are still quite large insects in the world. Mostly, however, they are not as large as those discovered in fossil records.

For example, the largest Dragonfly fossil found was supposed to live 250 million years ago during the paleozoic era. Its wing span was 30 inches (76.2 cm) and its body length of 18 inches (45.72 cm). Obviously, an environment rich in oxygen and the way insect breathes was beneficial to the early dragonfly, which had Wingspan about as wide as a toddler is high.