$A$ severe fall in blood pressure disturbs the function of kidneys and reduces

Filtration fraction is the ratio of

What is the $GFR$ of a normal healthy person?

Glomerular hydrostatic pressure is present in

Study the following statements and select the correct answer from the given options.
$i$. Diameter of afferent arteriole being smaller raises glomerular pressure for ultrafiltration.
$ii$. The colloidal osmotic pressure of blood is about $30 \ mmHg$ that opposes ultrafiltration.
$iii$. The arrangement of podocytes favours ultrafiltration.

Urine formation involves:
$I.$ Glomerular filtration
$II.$ Selective reabsorption
$III.$ Tubular secretion
Choose the correct option for the above statements.