Related Experiment Video

Updated: Apr 1, 2026

Ex Vivo Analysis of Mechanically Activated Ca2+ Transients in Urothelial Cells
05:35

Ex Vivo Analysis of Mechanically Activated Ca2+ Transients in Urothelial Cells

Published on: September 28, 2022

1.4K

Distal tubule bicarbonate accumulation in vivo. Effect of flow and transtubular bicarbonate gradients

M Iacovitti, L Nash, L N Peterson

    The Journal of Clinical Investigation
    |December 1, 1986
    PubMed

    More Related Videos

    In vitro Monitoring of Extracellular pH in Real-Time10:11

    In vitro Monitoring of Extracellular pH in Real-Time

    Published on: June 3, 2021

    2.1K
    Cytosolic Calcium Measurements in Renal Epithelial Cells by Flow Cytometry10:24

    Cytosolic Calcium Measurements in Renal Epithelial Cells by Flow Cytometry

    Published on: October 28, 2014

    15.9K

    Related Concept Videos

    Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion01:22

    Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion

    The kidneys maintain homeostasis through filtration, reabsorption, and secretion. Tubular reabsorption and secretion are crucial in forming urine and regulating electrolytes, water balance, and waste elimination.Tubular Reabsorption and Secretion ProcessesTubular reabsorption is the process that reclaims essential substances such as electrolytes, glucose, amino acids, and water from the glomerular filtrate back into the bloodstream. This is achieved through passive and active transport...
    2.0K
    Renal Regulation of Acid-Base Balance01:29

    Renal Regulation of Acid-Base Balance

    Metabolic reactions in the body produce nonvolatile acids, such as sulfuric acid, which generate an acid load of approximately 1 mEq of H+ per kilogram of body weight daily. Excreting H+ in the urine is essential to balance this acid load.
    In the kidneys, cells within the proximal convoluted tubules (PCT) and the collecting ducts secrete hydrogen ions (H+) into the tubular fluid. Specifically, in the PCT, Na+/H+ antiporters secrete H+ while reabsorbing Na+.
    However, the intercalated cells in...
    2.3K
    Renal Tubule and Collecting Duct01:24

    Renal Tubule and Collecting Duct

    The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
    Proximal Convoluted Tubule (PCT):
    The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
    4.5K
    Roles of Electrolytes: Chloride and Bicarbonate01:29

    Roles of Electrolytes: Chloride and Bicarbonate

    Chloride ions contribute to the osmotic pressure gradient distinguishing the intracellular fluid (ICF) from the extracellular fluid (ECF). They counterbalance positively charged ions in the ECF and ensure its electrochemical stability. The renal system's process of chloride absorption and release generally mirrors that of sodium ions.
    Conditions such as hypochloremia can arise from insufficient chloride reabsorption by the kidneys, often compounded by extended bouts of diarrhea, vomiting,...
    1.3K
    Reabsorption and Secretion in the DCT and Collecting Duct01:26

    Reabsorption and Secretion in the DCT and Collecting Duct

    The early phase of the DCT manages the reabsorption of approximately 10-15% of filtered water, 5–10% of filtered sodium, and 5–10% of filtered chloride. This process is facilitated by Na+–Cl− symporters in apical membranes and sodium-potassium pumps, as well as Cl− leakage channels in basolateral membranes. The early DCT also stands out as a site where parathyroid hormone (PTH) stimulates calcium reabsorption, depending on the body's requirements.
    The distal...
    4.1K
    Reabsorption and Secretion in the Loop of Henle01:17

    Reabsorption and Secretion in the Loop of Henle

    The thick ascending limb of the nephron loop has Na+–K+–2Cl− symporters in the apical membranes of its cells. These symporters simultaneously reclaim one sodium ion, one potassium ion, and two chloride ions from the tubular fluid. Sodium ions are actively transported into the interstitial fluid at the base and sides of the cell, diffusing into the vasa recta. Chloride ions move through leakage channels in the basolateral membrane into the interstitial fluid and then into the...
    4.9K