Calibers and microtubules of sympathetic axons are not subject to trophic control by the preganglionic nerve.
The caliber and microtubular content of the fibers emerging from the superior cervical ganglion of the cat were studied up to 60 days following preganglionic nerve transection. No significant difference was observed between normal and treated animals. This suggests that the caliber and microtubular content of the sympathetic axon are not subject to trophic control by the preganglionic nerve and that the normal firing rate of the pathway seems insufficient to affect the microtubular content of the fiber.
D000818:Animals; D001369:Axons / Q000502:physiology*; D002415:Cats; D005728:Ganglia, Sympathetic / Q000502:physiology* / Q000503:physiopathology; D008870:Microtubules / Q000502:physiology*; D009431:Neural Conduction; D010243:Paralysis / Q000503:physiopathology