peripheral resistance

Peripheral resistance refers to the opposition that blood vessels, particularly the small ones, offer to blood flow as it travels through the body. It is primarily influenced by the diameter of the blood vessels; narrower vessels create more resistance. When peripheral resistance increases, it makes it harder for the heart to pump blood, which can raise blood pressure. Factors like vessel health, emotional states, and physical activity can affect peripheral resistance. Understanding this concept helps in recognizing how circulation and blood pressure are regulated within the body.