Which of the Following Factors Do NOT Increase Systemic Vascular

Question

Which of the following factors do NOT increase systemic vascular resistance?
A) decreased vessel lumen diameter
B) increased blood viscosity
C) decreased vessel length
D) increased vasoconstriction
E) increased blood cell count

Accepted Answer

Decreased vessel length does not increase systemic vascular resistance; it actually decreases it. The other factors listed increase resistance by either narrowing the vessel or increasing the thickness of the blood.