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Apes share brain asymmetry pattern of humans + New discoveries in human anatomy

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Brain imprints on cranial bones from great apes and humans refute the long-held notion that the human pattern of brain asymmetry is unique
https://www.eva.mpg.de/press/news/2020/2...rains.html

INTRO: The left and right side of the brain are involved in different tasks. This functional lateralization and associated brain asymmetry are well documented in humans, but little is known about brain asymmetry in our closest living relatives, the great apes. Using endocasts (imprints of the brain on cranial bones), scientists now challenge the long-held notion that the human pattern of brain asymmetry is unique. They found the same asymmetry pattern in chimpanzees, gorillas, and orangutans. However, humans had the largest variability of this pattern. This suggests that lateralized, uniquely human cognitive abilities, such as language, evolved by adapting a presumably ancestral asymmetry pattern. (MORE - images, videos)



New discoveries in human anatomy
https://www.the-scientist.com/news-opini...omy--67055

INTRO: In the 16th century, when the study of human anatomy was still in its infancy, curious onlookers would gather in anatomical theaters to catch of a glimpse of public dissections of the dead. In the years since, scientists have carefully mapped the viscera, bones, muscles, nerves, and many other components of our bodies, such that a human corpse no longer holds that same sense of mystery that used to draw crowds.

New discoveries in gross anatomy—the study of bodily structures at the macroscopic level—are now rare, and their significance is often overblown, says Paul Neumann, a professor who specializes in the history of medicine and anatomical nomenclature at Dalhousie University. “The important discoveries about anatomy, I think, are now coming from studies of tissues and cells.”

Over the last decade, there have been a handful of discoveries that have helped overturn previous assumptions and revealed new insights into our anatomy. “What’s really interesting and exciting about almost all of the new studies is the illustration of the power of new [microscopy and imaging] technologies to give deeper insight,” says Tom Gillingwater, a professor of anatomy at the University of Edinburgh in the UK. “I would guess that many of these discoveries are the start, rather than the end, of a developing view of the human body.”

Here is a sampling of some of those discoveries.... (MORE - details)

INCLUDED: The brain’s drain ... Fluid-filled spaces ... The mesentery: An organ? ... Blood vessel networks in bone ... Reptile-like muscles in fetuses ... The fabella makes a comeback
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