Final answer:
The sum of all the vascular resistance within the systemic circulation is called the systemic vascular resistance (SVR) or total peripheral resistance (TPR), which is crucial for determining blood pressure and flow.
Step-by-step explanation:
The sum of all the vascular resistance within the systemic circulation is called the systemic vascular resistance (SVR), sometimes referred to as the total peripheral resistance (TPR).
Systemic vascular resistance is the resistance offered by the systemic circulation's blood vessels. It is a critical factor in determining blood pressure, blood flow, and cardiac output. The variables affecting blood flow and blood pressure in the systemic circulation include cardiac output, blood viscosity, and the length and diameter of the blood vessels.
Moreover, in the arterial system, vasodilation and vasoconstriction of the arterioles significantly affect systemic blood pressure. As resistance increases, blood pressure increases, and blood flow decreases.