Biology 251 Fall 2011 1 TOPIC 21: THE URINARY SYSTEM: REABSORPTION, SECRETION, AND URINE CONCENTRATION I. Tubular Reabsorption A. Introduction 1. Highly selective process a) Need to get essential materials out of tubules and back in blood b) Most wastes, other than urea, are too big to be ...
Reabsorption: Reclaiming Valued Substances • The relationship of glomerular filtration and tubular reabsorption is something like a parent who cleans a child's room by arbitrarily throwing much of the room's contents into the trash box.
Functions of the Nephron - Filtration, Reabsorption, and Secretion Answer all questions on a separate sheet of paper. 1. The volume of blood entering the kidney through the renal artery in one day is more than the volume leaving through the renal vein.
Experimental Physiology (1990), 75, 375-382 Printedin Great Britain THEEFFECTOFLOOPDIURETICSONFLUID REABSORPTIONFROMTHERATPROXIMAL CONVOLUTEDTUBULE
Reabsorption in this segment is load dependent (more delivery, more reabsorption) E. Distal convoluted tubule 1. 5-8% of NaCl reabsorption 2.
sulphonate) onfluid reabsorption bythe rat proximal convoluted tubule were investigated by the stationary microperfusion (split-drop) method. Addition of 10-5 mol1-1 DIDSto luminal
What part of the tubule achieves most of the reabsorption? b. Where does further reabsorption and “fine tuning” occu. r? 4. a. Describe paracellular reabsorption.
Tubular Reabsorption-takes place at proximal tubule, loop of Henle, distal tubule, and collecting duct-most water, glucose, amino acid, sodium reabsorption occurs in proximal tubule-salt and water reabsorption also occurs in loop of Henle, distal tubule, and collecting duct-loop of Henle is a long ...
JORGETORRETTI, I. M. WEINER AND GILBERT H. MUDGE concentration (14,24). As will be discussed below, the present interpretations do not agree with previous conclusions that non-ionic diffusion is the sole determinant of both net tubular secre-tionandnet tubular reabsorption.
Tubular Reabsorption • Is a highly selective process • By controlling the reabsorbtion rate, the kidney adjust the excretion of specific compounds Reabsorption by the Renal Tubules Filtration = Glomerularfiltrationrate x Plasma concentration