Tubular reabsorption and secretion
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Tubular reabsorption and secretion
Renal system
Anatomy and physiology
Renal system anatomy and physiology
Fluid compartments and homeostasis
Hydration
Body fluid compartments
Movement of water between body compartments
Renal clearance, glomerular filtration and renal blood flow
Renal clearance
Glomerular filtration
TF/Px ratio and TF/Pinulin
Measuring renal plasma flow and renal blood flow
Regulation of renal blood flow
Renal tubular reabsorption and secretion
Tubular reabsorption and secretion
Tubular secretion of PAH
Tubular reabsorption of glucose
Urea recycling
Tubular reabsorption and secretion of weak acids and bases
Renal tubular physiology
Proximal convoluted tubule
Loop of Henle
Distal convoluted tubule
Renin-angiotensin-aldosterone system
Renin-angiotensin-aldosterone system
Renal electrolyte regulation
Sodium homeostasis
Potassium homeostasis
Phosphate, calcium and magnesium homeostasis
Renal sodium and water regulation
Osmoregulation
Sodium homeostasis
Antidiuretic hormone
Kidney countercurrent multiplication
Free water clearance
Renal endocrine functions
Vitamin D
Erythropoietin
Acid-base physiology
Physiologic pH and buffers
Buffering and Henderson-Hasselbalch equation
The role of the kidney in acid-base balance
Acid-base map and compensatory mechanisms
Respiratory acidosis
Metabolic acidosis
Plasma anion gap
Respiratory alkalosis
Metabolic alkalosis
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Tubular reabsorption and secretion
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Summary
Tubular reabsorption and secretion are important processes that occur in the kidneys to maintain the balance of electrolytes and fluids in the body. Tubular reabsorption occurs when the kidneys reabsorb useful substances, such as glucose, amino acids, and electrolytes, from the filtrate back into the bloodstream. This process occurs primarily in the proximal tubule of the nephron and is critical in maintaining the body's electrolyte and fluid balance. Tubular secretion is the opposite process, where the kidneys secrete waste products, such as excess potassium or hydrogen ions, from the bloodstream into the tubular fluid. This process occurs primarily in the distal and collecting tubules of the nephron.
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