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
Body fluid compartments
Hydration
Movement of water between body compartments
Renal clearance, glomerular filtration, and renal blood flow
Glomerular filtration
Measuring renal plasma flow and renal blood flow
Regulation of renal blood flow
Renal clearance
TF/Px ratio and TF/Pinulin
Renal electrolyte regulation
Phosphate, calcium and magnesium homeostasis
Potassium homeostasis
Sodium homeostasis
Renal sodium and water regulation
Antidiuretic hormone
Free water clearance
Kidney countercurrent multiplication
Osmoregulation
Sodium homeostasis
Renin-angiotensin-aldosterone system
Renin-angiotensin-aldosterone system
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Tubular reabsorption and secretion
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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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