Research Done in the 1930s by the French Physiologist Jean

question 57

Short Answer

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 20%. How will this affect the resistance R? Assume that l is constant. It will drop by __________%.

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Definitions:

Pinna

The outer part of the ear, made of cartilage and skin, that helps to collect and direct sound waves into the ear canal.

Babinski Sign

A reflex indicated by upward movement of the big toe when the sole of the foot is stimulated, used to assess neurological function.

Disappear

To vanish or go out of sight; in medical terms, it could refer to the resolution of symptoms or findings.

Age

The length of time that a person has lived or a thing has existed.