Evidence that distinct neural pathways mediate parasympathetic contractions and relaxations of guinea-pig trachealis.

@article{Canning1993EvidenceTD,
  title={Evidence that distinct neural pathways mediate parasympathetic contractions and relaxations of guinea-pig trachealis.},
  author={Brendan J. Canning and B J Undem},
  journal={The Journal of physiology},
  year={1993},
  volume={471},
  pages={25-40}
}
1. The guinea-pig trachea was isolated with its extrinsic innervation intact and pinned to the bottom of a water-jacketed dissecting dish filled with warmed, oxygenated Krebs solution. The trachea was not separated from the oesophagus. Isometric tension was measured in a segment of the rostral portion of the trachea. 2. Stimulation of the vagus nerves… CONTINUE READING