Nephron Function | Class 12 Biology
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About This VideoFiltration: Blood passing
About This Video
Filtration: Blood passing through glomerulus is iltered into Bowman’s capsule. It is speciically
iltered here, unlike at the other parts of the vessels, because glomerulus walls are porous, and
the fraction of the blood pressure reaching here provides the iltration pressure. The iltrate
appearing in Bowmans capsule is called as glomerular iltrate, which contains numerous useful
substances such as glucose, amino acids, salts etc in aqueous solution.
Reabsorption: All the useful constituents of the glomerular ilterate are reabsorbed in proximal
tubules and when iltrate leaves proximal tubules, it mostly contains nitrogenous wastes.
Secretion: The tubular epithelium also secretes substances into the lumen, this secretion is very
selective and is mainly of hydrogen ions to balance pH value of the iltrate passing through the
tubule.
Filtration: Blood passing through glomerulus is iltered into Bowman’s capsule. It is speciically
iltered here, unlike at the other parts of the vessels, because glomerulus walls are porous, and
the fraction of the blood pressure reaching here provides the iltration pressure. The iltrate
appearing in Bowmans capsule is called as glomerular iltrate, which contains numerous useful
substances such as glucose, amino acids, salts etc in aqueous solution.
Reabsorption: All the useful constituents of the glomerular ilterate are reabsorbed in proximal
tubules and when iltrate leaves proximal tubules, it mostly contains nitrogenous wastes.
Secretion: The tubular epithelium also secretes substances into the lumen, this secretion is very
selective and is mainly of hydrogen ions to balance pH value of the iltrate passing through the
tubule.
4 سال پیش
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