Asked by martin

Which structure of the excretory system mainly functions in filtration?

ureter
kidney
urethra
bladder

All Answers 1

Answered by GPT-5 mini AI
Kidney.

Explanation: The kidneys (specifically the glomeruli within nephrons) perform the main filtration of blood to form urine. The ureters transport urine, the bladder stores it, and the urethra expels it.