Countercurrent Exchange of Heat in the Dog Kidney
نویسندگان
چکیده
منابع مشابه
Countercurrent exchange in the renal medulla
Thomas L. Pallone,1 Malcolm R. Turner,2 Aurélie Edwards,3 and Rex L. Jamison4 1Division of Nephrology, University of Maryland School of Medicine, Baltimore, Maryland 21201; 2Department of Human Anatomy and Cell Biology, University of Liverpool, Liverpool L69 3GE, United Kingdom; 3Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155; and 4Division of ...
متن کاملCountercurrent exchange in the renal medulla.
The microcirculation of the renal medulla traps NaCl and urea deposited to the interstitium by the loops of Henle and collecting ducts. Theories have predicted that countercurrent exchanger efficiency is favored by high permeability to solute. In contrast to the conceptualization of vasa recta as simple "U-tube" diffusive exchangers, many findings have revealed surprising complexity. Tubular-va...
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The unusual complexity of the testicular blood vessels of eutherian mammals has been shown to have haemodynamic and thermoregulatory significance. The pulse wave of pressure passing down the long, coiled internal spermatic artery of the ram (Waites & Moule, 1960), dog (Blombery, Gow & Waites, unpublished observations) and rat (Setchell, 1969) is attenuated to a small oscillation, but mean blood...
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Blood-sucking insects experience thermal stress at each feeding event on endothermic vertebrates. We used thermography to examine how kissing-bugs Rhodnius prolixus actively protect themselves from overheating. During feeding, these bugs sequester and dissipate the excess heat in their heads while maintaining an abdominal temperature close to ambient. We employed a functional-morphological appr...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1969
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.25.5.617