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Picture of the Month (April 2009)
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Dedicated User Captions:
1. They grow on trees! Finally in 2009 the disturbing chicken debate found its end
2. Darwin’s first diagram of an evolutionary tree from his First Notebook on Transmutation of Species (1837) as it should have been.
3. mutant Easter eggs in the fallout rain
(by cassandra)
Read more captions (not voted, latest on top)
- Elephant Testicles Dangling From a Cobweb Tree with UFO Observing on Dada Avenue
(by wacky rascal)
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Preparation of nerve endings
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| Nerves have been a topic in physiology since the beginning of the 19th century. The focus shifted from basic understanding of nerve conduction to more complex questions of the interactions in the nervous system and its detailed anatomic structures. This picture from 1921 comes from a series of anatomical preparations and shows nerve endings at a magnification of 2600x. | |
Related Items:
Helmholtz experiments on nerve conduction from 1850/52
Du Bois-Reymond's contraction telegraph, a demonstration device introduced in an article from 1862
See also the essays from Schmidgen (2003) and Dierig (2006) |
Picture Source:
Boeke, J. 1921. Nervenregeneration und verwandte Innervationsprobleme. Ergebnisse der Physiologie 19: 448-593 | |
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