Periaxonal K+ regulation in the small squid Alloteuthis. Studies on isolated and in situ axons.
A novel giant axon preparation from the squid Alloteuthis is described. Properties of in situ and isolated axons are similar. Periaxonal K+ accumulation is a function of the physiological state of the animal and of the axon and its sheathing layers. Carefully dissected isolated axons, and axons in situ in a healthy mantle, show much less K+ accumulation than previously reported in squid. It is suggested that the Schwann cells are involved in the observed K+ regulation.
Abbott
N J
NJ
Marine Biological Association Laboratory, Citadel Hill, Plymouth, United Kingdom.
Lieberman
E M
EM
Pichon
Y
Y
Hassan
S
S
Larmet
Y
Y
D000200:Action Potentials; D000818:Animals; D001369:Axons / Q000502:physiology*; D049832:Decapodiformes; D004558:Electric Stimulation; D066298:In Vitro Techniques; D011188:Potassium / Q000378:metabolism*; D012583:Schwann Cells / Q000502:physiology
D011188:Potassium