How are cubes in the womb? Scientists reach the bottom of mystery Science


A single cube miscarried by researchers atop a cliff

Yang and others. 2021

By Tess Jossey

Man can be fascinated by cubes, but only one animal hunts them: bare-bare womb. This beloved Australian marsupial squeezes around 100 six-sided buds every day – a capability that has long held mysterious scientists. Now, the researchers say they have uncovered how the womb of the womb creates this extraordinary growth.

“This study is really good,” says Sunagwan Jung, a biophysicist at Cornell University who studies the mechanics of animal movements and was not involved with the research. It shows, he says, that the guts of these animals are “very special.”

Bare-bare womb (Vombutus ursinus), Weighing up to 35 kg, live in Australia’s grasslands and eucalyptus forests, where it spends its nights grazing on plants and spending days in underground tunnels. It is a regional animal, dropping its unusual drops as a calling card. But how come such a fast-moving scat comes from a round anus?

A woman conceived with her joy

Yang and others. 2021

To get to the bottom of the mystery, scientists destroyed a womb that had died of being hit by a car. He examined the intestines and found that they had two grooves where guts were more elastic, which the team first reported in 2018.

In the new study, researchers dissected two more wombs and examined layers of muscle and tissue, detecting areas of varying thickness and stiffness. He then created a 2D mathematical model that describes how regions expand and contract with the rhythm of digestion. The intestinal tract continues to shrink for several days, squeezing the skin as the intestine releases nutrients and water out of the feces, the team reports in a magazine titled Today Soft material.

The stiffer parts are “like a rigid rubber band”[they’re] Is going to contract faster than soft areas, ”said David Hu, a biomechanics researcher at the Georgia Institute of Technology and author on the study. The soft intestinal areas slowly squeeze and mold the final corners of the cube, which the team found. In other mammals, the wavelike peristalsis of the intestinal muscles are consistent in all directions. But in the womb, corrugated tissue and multiple cycle shapes are irregular contractions on firm, flat-sided cubes.

This just leaves a mystery: why the cubic evolved in the first place. Hu speculates that because animals climb rocks and log to mark their territory, flat-sided feces are unlikely to be rolled from these high slips.

As to what the world is going to do with this new information, Hu acknowledges that it is “not meant to change the way we make plastic.” But, the strategy of the womb can help engineers design better to shape valuable or sensitive materials, he says.

In the meantime, Hu also feels that this knowledge may help researchers to increase pregnancy in captivity. “Sometimes their stool is not as much as that of a cube [wild] He says. Squar Pope, healthy womb.

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