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Science 29 February 1980:
Vol. 207. no. 4434, pp. 1001 - 1002
DOI: 10.1126/science.7352293
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Articles

Science, Vol 207, Issue 4434, 1001-1002
Copyright © 1980 by American Association for the Advancement of Science

articles

Temperature sensitivity of tone in the rabbit facial vein: myogenic mechanism for cranial thermoregulation

RJ Winquist and JA Bevan

Intrinsic myogenic tone in the buccal segment of the rabbit facial vein is exquisitely sensitive to small changes in temperature in the range 33 degrees to 44 degrees C. This particular venous segment also exhibits a preponderance of beta-adrenergic receptors and receives a dense, medial sympathetic innervation. This area of the vein is proposed to act as a temperature-sensitive sphincter that distributes cooled nasal venous blood between superficial and deep venous drainage systems in the head and neck. Deviation of cool blood to deeper venous sinuses has been shown to be an important thermoregulatory mechanism.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Involvement of RhoA/Rho Kinase Pathway in Myogenic Tone in the Rabbit Facial Vein.
C. Dubroca, D. You, B. I. Levy, L. Loufrani, and D. Henrion (2005)
Hypertension 45, 974-979
   Abstract »    Full Text »    PDF »
Humidity does not affect central nervous system oxygen toxicity.
R. Arieli and Y. Moskovitz (2001)
J Appl Physiol 91, 1327-1333
   Abstract »    Full Text »    PDF »
Modulation of temperature-induced tone by vasoconstrictor agents.
M. P. Massett, S. J. Lewis, J. N. Bates, and K. C. Kregel (1999)
J Appl Physiol 86, 963-969
   Abstract »    Full Text »    PDF »


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