نتایج جستجو برای: convoluted bed
تعداد نتایج: 52066 فیلتر نتایج به سال:
KUNAU, ROBERT T., JR., HAROLD L. WEBB, AND SUSAN C. BORMAN. Characteristics of sodium reabsorption in th loop of Henle and distal tubule. Am. J. Physiol. 227(5) : 1181-l 191. 1974.-This study was performed to define the characteristics of the relationship between sodium delivery to and sodium reabsorption in the superficial loop of Henle (loop segment) and distal convoluted tubule (distal segme...
Renal micropuncture observations in the rat suggest that the entire "distal tubule" (defined by the micropuncturist as that portion of the renal tubule extending between the macula densa and its first junction with another (renal tubule) may be responsive to vasopressin. However, this portion of the renal tubule contains two segments that are morphologically dissimilar. The "early" distal tubul...
Previous micropuncture studies supporting hydrogen secretion as the mechanism of bicarbonate reabsorption have relied on the demonstration of an acid disequilibrium pH in the proximal tubule after systemic administration of a carbonic anhydrase inhibitor. Previous calculations of disequilibrium pH, however, have involved the necessary assumption that PCO2 in the proximal convoluted tubule was e...
Excessive renal efferent sympathetic nerve activity contributes to hypertension in many circumstances. Although both hemodynamic and tubular effects likely participate, most evidence supports a major role for α-adrenergic receptors in mediating the direct epithelial stimulation of sodium retention. Recently, it was reported, however, that norepinephrine activates the thiazide-sensitive NaCl cot...
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