Research Done in the 1930s by the French Physiologist Jean

question 152

Multiple Choice

Research done in the 1930s by the French physiologist Jean Poiseuille showed that the resistance R of a blood vessel of length l and radius r is where k is a constant. Suppose a dose of the drug TPA increases r by 21%. How will this affect the resistance R? Assume that l is constant. ​

• A) It will increase by 105%.
• B) It will drop by 84%.
• C) It will increase by 84%.
• D) It will drop by 105%.

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