Final answer:
Acute glomerulonephritis causes an Intrinsic/Intrarenal injury to the kidneys by damaging the glomeruli, which is the site of filtration within the kidney.
Step-by-step explanation:
Acute glomerulonephritis, such as that caused by diseases like Goodpasture's syndrome, Wegener’s granulomatosis, or systemic lupus erythematosus, results in inflammation and damage to the glomeruli of the nephrons within the kidneys. This condition leads to an Intrinsic/Intrarenal injury because the damage occurs directly to the kidney tissue itself, namely the filtering units called glomeruli.
This differs from Prerenal injury, which is related to problems with the blood supply to the kidney, and Postrenal injury, which involves obstructions in the urinary tract. Acute glomerulonephritis can cause an immune response that harms the capillary endothelial cell junctions of the glomeruli, leading to acute kidney injury.