the juxtaglomerular apparatus changes if osmolarity to increase the amount of water in the distal tubule. the statement is true.
The distal convoluted tubule and the glomerular afferent arteriole combine to generate the specialised juxtaglomerular apparatus. Its primary job is to control glomerulus filtration rate and blood pressure, and it is situated close to the vascular pole of the glomerulus.
In contrast to osmolality, which is the number of solute particles in 1 kg of solvent, osmolarity refers to the quantity of solute particles per 1 L of solvent. The distinction between osmolality and osmolarity is negligible for diluted solutions.
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