After filtering by the nephron, where does the cleaned blood go

renal vein

Urine passes thru large channels called (ducts) which drain into the renal pelvis or (inner part of the kidney).  Next, the urine passes thru a ureter then afterward goes from each kidney to the bladder. Urine is then stored in the bladder while the “cleaned' (filtered) blood”  from each kidney go into a large blood vessel called the renal vein. This vein gets the blood back to the heart.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

i'll try what topic lol