Evolution of Fish Respiratory System and the Design Flaw of Choking

2min Snip

00:00

Play full episode

Summary

Transcript

Episode notes

Fish initially had separate systems for food and breathing, with no risk of choking. However, when fish evolved to have lungs to survive on land, the lungs were developed from the existing digestive tract. This led to an overlapping design of the eating and breathing systems, resulting in the inherent design flaw of choking. While other animals can choke, humans have become the worst breathers in the animal kingdom.

Sometimes a seemingly silly question gets stuck in your craw and you can’t shake the feeling that something big lies behind it. We are constantly collecting these kinds of questions from our listeners, not to mention piling up a storehouse of our own “stupid” questions, as we lovingly call them. And a little while back, we noticed a little cluster of questions that seemed to have a shared edgy energy, and all led us to the same place: Our own bodies. So, today on Radiolab, we go down our throats and get under our skin, we take on evolution and anatomy and molecular cosmetics, to discover some very not-stupid answers to our seemingly stupid questions.

Special thanks to Mark Krasnow, Sachi Mulkey, Kari Leibowitz, Andrea Evers, Dr. Mona Amin, Benjamin Ungar, Praby Singh, Brye and Rachel Adler

EPISODE CREDITS:

Reported by - Molly Webster, Becca Bressler, Latif Nasser, and Alan Goffinskiwith help from Ekedi Fausther-KeeysProduced by - Sindhu Gnanasambandan, Becca Bressler, Alyssa Jeong Perry, Molly Webster with help from - Matt KieltyOriginal music and sound design contributed by - Jeremy Bloom with mixing help from - Arianne WackFact-checking by - Diane Kelley, Emily Kriegerand edited by - Pat Walters and Alex Neason

Our newsletter comes out every Wednesday. It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing radiolab@wnyc.org.

Leadership support for Radiolab’s science programming is provided by the Gordon and Betty Moore Foundation, Science Sandbox, a Simons Foundation Initiative, and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.