Excretion and Osmoregulation — Biology STD 11 Science — Question
Maharashtra BoardEnglish MediumSTD 11 ScienceBiologyExcretion and Osmoregulation4 Marks
Question
What is glomerular filtration pressure or net effective filtration pressure?
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Answer
Glomerular filtration pressure $\text{(GFP)}$ Effective filtration pressure $\text{(EFP)}$ is the difference between the hydrostatic pressure $\text{(GHP)}$ and the sum of osmotic pressure of blood and capsular pressure $\text{(CHP).}$
It can be represented as:
$\text{EFP =}$ Glomerular hydrostatic pressure $– ($Osmotic pressure of blood $+$ Filtrate Flydrostatic pressure$)$
$= 55 – (30 + 15)$
$= 10 \ mmHg$
$[$Note: Net filtration pressure $=$ Glomerular blood hydrostatic pressure $– ($Capsular hydrostatic pressure $+$ Blood colloid osmotic pressure$)$
Source: Tort or a, $G.,$ Derrickson, $B$. Principles of Anatomy and Physiology. $11^{th}$ Edition.$]$
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