This is a chromolithograph from the book Topographisch-anatomischer Atlas : nach Durchschnitten an gefrornen Cadavern by Wilhelm Braune. According to the U.S. National Library of Medicine (NLM), Braune was a professor at the University of Leipzig. The book, published in Leipzig in 1872, consists of 30 color lithographs of frozen cross sections of human anatomy. The NLM detail page offers a little more information about how the plates were made: "After sections were cut, thin paper was placed over them and tracings were made of the anatomical features."
Padded helmet cover shows little protection for football players
A foam cap that fits over football helmets seemed to reduce the force of blows in lab experiments — but not on the field.
‘Cyclic sighing’ can help breathe away anxiety
Stanford Medicine researchers showed that five minutes a day of breathing exercises can reduce overall anxiety and improve mood.