I think it depends on pressure
ඒකයි මම කල්පනා කෙරුවෙThe answer to your question in a mathematical way, you can use the Poiseuille’s equation.
vessel radius (r), vessel length (λ) and viscosity of blood (η)
Blood Flow = π * ΔP * r^^4 * 8* η * λ (Note π = pi)
Also Blood Flow = ΔP/Resistance
Then we have..
Resistance = 8ηλ/πr^^4
Suppose that he flow rate of an artery is reduced to half of it;'s normal value due to deposits narrowing it..
You can easily calculate using the above equation...
the new radius = 0.841 *old radius (a decrease of nearly 16%)
Note - the decrease of 16% affects in a big way - flow rate is reduced to half!
Because of the r^^4
ඉතිං මචං නහර හීන් වුණාම ඒ සප්ලයි එකම තියාගන්ඩ ප්රෙෂර් එක වැඩි කරන්ඩ වෙනව..
ඉතිං මොකටද fight or flight තත්වයකදි නහර පටු වෙන්නෙ..
