منابع مشابه
Dynamics of Transcapillary Fluid Exchange
Fluid balance at the capillary level has been simulated with an analogue computer program, based on experimental data on regional differences in capillary permeability, surface areas, and hydrostatic pressures. The program takes into account fluid and protein fluxes into and out of the interstitial space. Solutions are obtained for tissue hydrostatic pressure, tissue fluid osmotic pressure, int...
متن کاملTranscapillary fluid exchange in the renal cortex.
• In the microcirculation of the renal cortex, fluid exchange proceeds at very high rates in two anatomically and functionally distinct capillary systems, the glomerular and the peritubular capil-laries. Net ultrafiltration is confined to the glomeru-lus, which consists of a tuft of capillaries surrounded by the ultrafiltrate enclosed within Bowman's capsule at the proximal end of the nephron. ...
متن کاملTranscapillary fluid exchange during arteriolar vasomotion.
Rhythmic contraction of small arterioles and the resulting pulsatile flow in the capillaries they supply are phenomena that have frequently been observed in the microcirculation. When an arteriole contracts, the capillary hydrostatic pressure drops below the plasma osmotic pressure and fluid is reabsorbed from the tissue into the blood. Because the capillary flow rate is slowed during this time...
متن کاملEstrogen and progesterone effects on transcapillary fluid dynamics.
The purpose of this study was to determine estrogen (E(2)) and progesterone (P(4)) effects on atrial natriuretic peptide (ANP) control of plasma volume (PV) and transcapillary fluid dynamics. To this end, we suppressed reproductive function in 12 women (age 21-35 yr) using a gonadotropin releasing-hormone (GnRH) analog (leuprolide acetate) for 5 wk. During the 5th week, the women either receive...
متن کاملEffects of some vasodilator drugs on transcapillary fluid exchange in renal cortex.
In 23 Munich-Wistar rats with surface glomeruli, the determinants of glomerular ultrafiltration and peritubular capillary uptake of proximal reabsorbate were studied before and during intra-arterial infusions of mildly vasodepressor doses of prostaglandin E1,acetylcholine, and bradykinin. For each drug single-nephron glomerular filtration rate remained unchanged from normal hydropenic values wh...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1968
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.52.1.29