For 340 Years, We Were Wrong About How Sperm Move

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Revealed an interesting fact in 3D imaging. Carriage of her male animal division proliferating by meiosis. If we bring a sperm cell to normal human size, it travels an equivalent distance to Mount Everest to fertilize the egg. They move through the water around them by wiggling their sperm execution tail. During intercourse, close to the sperm, roughly fifty million do not reach the egg.

However, a single sperm cell is sufficient to fertilize an egg. Although we learned that sperm existed historically in 1677, it would take another 200 years to in-depth how they formed.

The “preformationists” of the time believed that a miniature human being in a cell and the female egg was a simple shelter for these little people to grow up.

Nevertheless, the idea of ​​”epigenetics” emerged in the 1700s, and people interested in this science argued that the emerging man and woman was a joint product. This idea was confirmed later in the same century. Although we know much more about sperm today, it seems that some of the quirks of sperm still manage to hide from us.

In the 17th century, Antonie Philips van Leeuwenhoek, a Dutch businessman (and a self-taught scientist), became interested in lenses. He was the first person to study microorganisms. And for this reason, it is also referred to today as the children of microbiology. He named these tiny organisms in Latin “mini animals”, “animals”. Leeuwenhoek was also the first to have muscle fibers, capillary blood flow, and bacteria.

Three Dimensional Imaging of Sperm

A better lens than Leeuwenhoek’s hasn’t been made for 200 years, moreover, our perception of sperm cells moving around in an “eel-like motion in the water” has not moved far from his definition until recently. Using the latest technology in 3D microscopy, the researchers have succeeded in reproducing the fast movements of the flagellum (tail).

Until now, this has proven very difficult, given the tiny size of the cell and our abilities. Sperm tail can move 20 times per second; However, when we look at the super-fast cameras that can capture 55 thousand frames per second, we see that something is happening. Sperm whips are essentially crooked, that is, the fluid motions of the whips are rotated in a circle, but the sperm has an ingenious way to mitigate this effect, such as rolling around as the water spirals around like an otter.

Computer-Aided Sperm Analysis (CASA) systems used in clinical and research settings still use 2D imaging. That’s all there is to trends and not detecting whether cells are moving asymmetrically (fertile effect). With the male population making more than half of the infertility cases, our better understanding of sperm and more such methods will of course change the way we diagnose and manage such cases.