Answer :
Increased peripheral resistance leads to increased blood pressure, reflecting a direct relationship where higher resistance requires higher pressure to maintain blood flow. The correct option is b.
The statement that accurately reflects the relationship between peripheral resistance and blood pressure is: Increased peripheral resistance leads to increased blood pressure. Peripheral resistance is the resistance of the artery and blood vessel walls to the pressure placed on them by the force of the heart pumping. When the arterioles constrict (vasoconstriction), the resistance within the arterial system increases, leading to an increase in blood pressure. Conversely, when blood vessels dilate (vasodilation), the resistance decreases, thereby lowering blood pressure. Blood pressure, including both systolic and diastolic pressure, is influenced by factors like blood volume, cardiac output, blood viscosity, and the length and diameter of blood vessels.
As peripheral resistance increases, blood pressure also increases, as resistance directly affects flow within the vessels. To maintain adequate blood flow against higher resistance, pressure must increase. Therefore, the correct answers are B. Increased peripheral resistance leads to increased blood pressure, and A. a high cardiac output and high peripheral resistance, which both indicate scenarios where blood pressure would be higher.
