Sympathetic nervous system
New look at lampreys rewrites textbooks on origins of sympathetic nervous system
Sympathetic neurons pepper the embryos of the jawless fish—Earth’s first vertebrates—and overturn the idea that “fight or flight” was an innovation of jawed vertebrates.
![Research image of a lamprey.](https://www.thetransmitter.org/wp-content/uploads/2024/04/1200-inside-TH-Lamprey-1024x683.webp)
New look at lampreys rewrites textbooks on origins of sympathetic nervous system
Sympathetic neurons pepper the embryos of the jawless fish—Earth’s first vertebrates—and overturn the idea that “fight or flight” was an innovation of jawed vertebrates.
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