Blood pressure regulation is the process by which the body maintains optimal blood pressure levels to ensure proper blood flow to organs and tissues. This regulation involves various mechanisms, including the heart, blood vessels, and kidneys. The nervous system and hormones, such as renin and angiotensin, play crucial roles in adjusting blood vessel diameter and fluid balance. When blood pressure rises, the body can respond by dilating blood vessels and increasing urine production through the kidneys, which helps lower blood volume. Conversely, if blood pressure drops, the body can constrict blood vessels and retain fluid to stabilize pressure. This dynamic balance is essential for overall health.