Total Peripheral Resistance is Affected Primarily By

Question

Total peripheral resistance is affected primarily by
A) blood vessel diameter.
B) blood vessel length.
C) blood viscosity.
D) venous pressure.
E) turbulence.

Accepted Answer

Total peripheral resistance is primarily affected by the diameter of blood vessels. When the diameter of blood vessels changes, it affects the resistance to blood flow and therefore affects total peripheral resistance. Blood vessel length and blood viscosity can also have minor effects on total peripheral resistance, but these are not primary factors. Venous pressure and turbulence do not significantly affect total peripheral resistance.