Introduction to filtration - filtrate formation and composition

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• At the nephron, the three process responsible for the formation of urine include:
• Glomerular filtration.
• Tubular reabsorption.
• Tubular secretion.

• During filtration, a filtrate is formed within the renal tubule.
• Reabsorption is the conserving of water and many solutes by moving them back into the blood stream.
• Secretion involves moving unfiltered substances into filtrate.

• Filtration occurs at the renal corpuscle.
• Hydrostatic blood pressure moves fluid across the filtration membrane.
• The membrane of the glomerular capillaries is the actual filtering structure.
• The filtration membrane keeps larger elements in the bloodstream.

• The filtrate consists of:
• Water
• Glucose
• Amino acids and small proteins
• Ions (K+, Cl-, H+, HCO3-, Na+)
• Urea

Видео Introduction to filtration - filtrate formation and composition канала Homework Clinic