In 'The Wine-Dark Sea Within,' cardiologist Dhun Sethna describes a 17th-century insight that revolutionized medicine.
by Dhun Sethna. Copyright © 2022. Available from Basic Books, an imprint of Hachette Book Group, Inc.
Blood circulation, as is now understood, is a double system. There is a circuit through the body as well as one through the lungs . Each circuit is spoken of as a circulation because the circle is a symbol that ends at the point at which it begins. The historical unraveling of each circulation is a theme of this book. The heart, too, is in reality an assembly of two hearts that work in harmony at two different tasks.
The correct analysis of the heart’s motion as a mechanical pump, and only as a pump, that ejected blood into the vessels at each contraction was a central innovation essential to his scheme. Aspects of today’s therapies, such as intravenous infusions or subcutaneous injections , even nasal sprays for allergy, could only have been conceived after it was understood that substances introduced into the bloodstream at one site, or even breathed in, are transported to any and every other site because the blood circulates.
Österreich Neuesten Nachrichten, Österreich Schlagzeilen
Similar News:Sie können auch ähnliche Nachrichten wie diese lesen, die wir aus anderen Nachrichtenquellen gesammelt haben.
People Who Were Adopted By People From A Different Race Or Ethnicity Are Sharing Their Experiences“It’s harmful to me to hear my adoptive parents generalize people of color so harshly knowing good and well I am one.”
Weiterlesen »
Hayley Kiyoko Has Caught Up With Her Past“We're all so connected and we're so different, but we're so similar in so many ways.” June cover star Hayley Kiyoko isn’t around only for Pride — her music is for people who feel lost and struggle with mental health 🌈 ✨ ➡️
Weiterlesen »
How heat pumps can suck 3 to 5 times more energy out than the electricity put inThis Undecided with Matt Ferrell video explains how heat pumps move 3 to 5 times more heat than the electricity you put into it.
Weiterlesen »
Fate of A's in Oakland could come down to 450 'affordable' apartmentsDave Kaval, John Fisher and the A’s may skip town rather than build affordable housing in Oakland.
Weiterlesen »
N.J. strip club owner charged with sexually assaulting dancer in VIP roomJohn Acunto, 62, owner of Johnny A's Hitching Post in Paterson, faces multiple charges.
Weiterlesen »