Peripheral resistance

Question 1

(): opposition to flow
Amount of friction blood encounters with vessel walls, generally in peripheral (systemic) circulation
Three important sources of resistance

Answer 1

Resistance
Blood viscosity
Total blood vessel length
Blood vessel diameter

Question 2

/
The thickness of blood due to formed elements and () proteins
The greater the viscosity, the less easily molecules can slide past each other
Increased viscosity equals increased ()

Answer 2

Blood viscosity
plasma
resistance

Question 3

/ vessel length
The longer the vessel, the greater the () encountered

Answer 3

Total blood
resistance

Question 4

Blood vessel ()
-Greatest influence on ()
-Frequent changes alter peripheral resistance
*Viscosity and blood vessel length are relatively ()

-Resistance varies inversely with /
*If radius increases, resistance decreases, and vice-versa

-() are greatest determinants
*Radius changes frequently, in contrast to larger arteries
*Abrupt changes in vessel diameter or obstacles such as fatty plaques from () dramatically increase resistance

Answer 4

diameter
resistance
constant
vessel radius
Arterioles
atherosclerosis