Shark pit organs: response to chemicals.

@article{Katsuki1969SharkPO,
  title={Shark pit organs: response to chemicals.},
  author={Yasuji Katsuki and Keiji Yanagisawa and A L Tester and James I. Kendall},
  journal={Science},
  year={1969},
  volume={163 3865},
  pages={405-7}
}
Nerve fibers from pit organs and canal neuromasts are distinguished by the nature of their electrophysiological response to mechanical and chemical stimulation. Pit organs respond to touch but have a relatively high threshold compared with canal neuromasts. They respond readily to sodium and potassium chloride solutions, the rate of discharge increasing with the concentration of the solution. Order of effectiveness with 1 molar solutions of monovalent cations is as follows: potassium, rubidium… CONTINUE READING