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Which of the following factors will NOT influence the amount of oxygen delivered to body tissues?
A. surface area of red blood cells
B. blood pressure
C. surface area of alveolio
D. rate of respiration
Kaplan says B, but I'm not exactly convinced. BP obviously changes when you are exercising and the heart is pumping faster to circulate more blood no? Now I always get a little confused on this but assuming the cross sectional area of the blood vessels is the same at rest and during exercise (not sure if this is actually a valid assumption), the blood flowing at a higher velocity would decrease blood pressure right?
In any case, the blood pressure seems to me to have an effect on the amount of oxygen delivered to the tissues, so what reasoning are they using to say it doesn't?
A. surface area of red blood cells
B. blood pressure
C. surface area of alveolio
D. rate of respiration
Kaplan says B, but I'm not exactly convinced. BP obviously changes when you are exercising and the heart is pumping faster to circulate more blood no? Now I always get a little confused on this but assuming the cross sectional area of the blood vessels is the same at rest and during exercise (not sure if this is actually a valid assumption), the blood flowing at a higher velocity would decrease blood pressure right?
In any case, the blood pressure seems to me to have an effect on the amount of oxygen delivered to the tissues, so what reasoning are they using to say it doesn't?