Which ONE of the following would produce the greatest reduction in blood flow through any given blood vessel?

Question

Which  ONE  of the following would produce the greatest reduction in blood flow through any given blood vessel?

Answer

When the diameter of the vessel is doubled

Answer

When haematocrit decreases from 40% to 20%

Answer

When vessel length is halved

Answer

When the pressure difference between each end of the blood vessel is halved.

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