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The importance of potassium in the function of frog semicircular canals.
Acta Otolaryngol. 1977 Nov-Dec; 84(5-6):344-51.AO

Abstract

The slow potentials and afferent discharge of impulses in frog semicircular canals have been studied at different endolymphatic and perilymphatic K+ concentrations. Results indicate that the presence of K ions in the bathing fluids is essential for maintaining the receptor function in crista ampullaris, although very low concentrations of this ion in the perilymph are sufficient to preserve the receptor responsiveness to mechanical stimuli. The hypothesis is put forward that K+ may be pumped from the exterior of the canal towards the intracupular structures, where it accumulates. A K-rich endolymphatic environment does, however, appear to be necessary to ensure the resting activity of ampullar receptors and their ability to be "disfacilitated" during inhibitory cupula deflections.

Authors

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Pub Type(s)

Journal Article

Language

eng

PubMed ID

303425

Citation

Valli, P, et al. "The Importance of Potassium in the Function of Frog Semicircular Canals." Acta Oto-laryngologica, vol. 84, no. 5-6, 1977, pp. 344-51.
Valli P, Zucca G, Casella C. The importance of potassium in the function of frog semicircular canals. Acta Otolaryngol. 1977;84(5-6):344-51.
Valli, P., Zucca, G., & Casella, C. (1977). The importance of potassium in the function of frog semicircular canals. Acta Oto-laryngologica, 84(5-6), 344-51.
Valli P, Zucca G, Casella C. The Importance of Potassium in the Function of Frog Semicircular Canals. Acta Otolaryngol. 1977 Nov-Dec;84(5-6):344-51. PubMed PMID: 303425.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The importance of potassium in the function of frog semicircular canals. AU - Valli,P, AU - Zucca,G, AU - Casella,C, PY - 1977/11/1/pubmed PY - 1977/11/1/medline PY - 1977/11/1/entrez SP - 344 EP - 51 JF - Acta oto-laryngologica JO - Acta Otolaryngol. VL - 84 IS - 5-6 N2 - The slow potentials and afferent discharge of impulses in frog semicircular canals have been studied at different endolymphatic and perilymphatic K+ concentrations. Results indicate that the presence of K ions in the bathing fluids is essential for maintaining the receptor function in crista ampullaris, although very low concentrations of this ion in the perilymph are sufficient to preserve the receptor responsiveness to mechanical stimuli. The hypothesis is put forward that K+ may be pumped from the exterior of the canal towards the intracupular structures, where it accumulates. A K-rich endolymphatic environment does, however, appear to be necessary to ensure the resting activity of ampullar receptors and their ability to be "disfacilitated" during inhibitory cupula deflections. SN - 0001-6489 UR - https://www.unboundmedicine.com/medline/citation/303425/The_importance_of_potassium_in_the_function_of_frog_semicircular_canals_ L2 - http://www.tandfonline.com/doi/full/10.3109/00016487709123976 DB - PRIME DP - Unbound Medicine ER -