Glucose is mainly absorbed in

$A$ large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about $1\%$ of it is excreted as urine. The remaining $99\%$ of the filtrate

The efferent arteriole emerging from the glomerulus forms a fine capillary network around the renal tubule, which is called .......

Transport of electrolytes through the loop of Henle takes place by:

Which of the following statements correctly describes the function of a specific part of the human nephron?

Components reabsorbed by the Proximal Convoluted Tubule $(PCT)$ - $P$
Components secreted by the Proximal Convoluted Tubule $(PCT)$ - $Q$
$I - K^{+}$,$II - \text{Ammonia}$,$III - HCO_{3}^{-}$,$IV - \text{Essential nutrients}$,$V - 70$ to $80\%$ $\text{electrolytes and water}$,$VI - H^{+}$
Select the correct option for $P$ and $Q$.
$P \quad\quad\quad Q$