Question

Figure 25.12B shows mean blood pressures at the entrances and exits of the large arteries, the terminal arteries, the arterioles, and the capillaries in the systemic circuit of a human at rest. Using those pressures and assuming a cardiac output of 6 L/min, calculate the collective vascular resistance of the large arteries, the terminal arteries, the arterioles, and the capillaries.

Answer 1

To calculate the collective vascular resistance of the large arteries, the terminal arteries, the arterioles, and the capillaries, use the blood pressures at the entrances and exits of these vessels, as well as the cardiac output.

Step-by-step explanation:

Subtract the mean blood pressure at the exit of each vessel from the mean blood pressure at the entrance, divide by the cardiac output, and sum up the individual resistances. To calculate the collective vascular resistance of the large arteries, the terminal arteries, the arterioles, and the capillaries

you need to use the blood pressures at the entrances and exits of these vessels, as well as the cardiac output. The formula to calculate vascular resistance is R = ΔP/Q, where R represents resistance, ΔP represents the pressure difference across the vessels, and Q represents the blood flow rate (cardiac output).