Kidneys

The video explains the role of kidneys in the human body, focusing on their location, structure, and function. It describes how blood enters the kidneys through the renal artery, where it is filtered to remove excess salts, water, and urea. The process involves nephrons, which are microscopic structures that filter blood and form urine. The clean blood returns to the heart, while urine is transported to the bladder. The kidneys constantly communicate with the brain to maintain fluid and salt balance, ensuring the body's homeostasis.

How do the kidneys communicate with the brain regarding fluid balance?

What happens to the blood after it has been filtered by the kidneys?