✦ LIBER ✦

The relative respiratory activity of sheath and axones in resting Limulus optic nerve

✍ Scribed by Shapiro, Herbert

Publisher: Wiley (John Wiley & Sons)
Year: 1937
Tongue: English
Weight: 894 KB
Volume: 9
Category: Article
ISSN: 0095-9898
DOI: 10.1002/jcp.1030090307

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✦ Synopsis

I n a study of regional differences in mctaholic rate of thc optic nerve of the king crab, Limulus polyphemus, Guttman ( '35) made the interesting observation that respiration is not uniform along the nerve, but that thc nerve, as a rule, respires most intensely in the region of the central portion, and declines toward either end (adjacent to eye or brain) and that this relation persists over a wide range of temperatures (16" to 31°C.).

Can this difference be further analyzed with respect to the oxygen up- takes of the constituent tissues of the nerve, viz., the fibers, which are uniformly non-medullatcd, and afferent in function, and the non-nervous sheath, which encases the fibers? Does the sheath take part in the maiifestatioii of this differential activity of the nerve as a whole, and if so what is the relative magnitude of its contribution? It will indeed be shown t h a t '14).

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