Release date: 2016-03-21
According to the British "BBC News" report, scientists have recently discovered that sperm can resist the viscoelasticity of liquids when they encounter difficulty in blocking the viscoelastic liquid. These fluids are essential for sperm to pass through. They are not only thick but also elastic and malleable, and bounce back when subjected to interference.
The scientists observed the behavior of bull sperm swimming in different fluids, and they found that the thickness of the liquid caused the sperm to move. And when the liquid they pass through is not elastic, they tend to swim alone.
Viscoelastic liquids include snot, plasticine and melted cheese, which are very common in the biological field. Dr. Chih-kuan Tung from North Carolina State University explained that this type of fluid also contains fluids in the reproductive system.
Although they compete fiercely to reach and fertilize the egg, the phenomenon of swimming sperm cooperation occurs in several species. Some rodent sperm even have a hook-like head, which allows them to join together to form a sperm chain.
But Dr. Tung and his colleagues are interested in what causes free-moving sperm to come together or move apart. Dr. Tung said: "If you look closely, you can see a very dynamic process, and when new cells are constantly being combined, cells will continue to leave."
Dr. Tung and his colleagues believe that an important tool for studying sperm behavior has been found. According to Dr. Tung, sperm can swim freely before fertilization, which is physically difficult to create. But exploring this process of sperm has a better effect on our understanding of potential physics.
Source: Tencent Science
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