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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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Da_Capo Da_Capo
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12 years ago
 
Can anybody help me with this problem?
Use your date to calculate the increase in flow rate in ml/min/mm Hg.  I'm not even sure how to set up the problem.  Thinking Face

My data is as follows:

mm/hg          ml/mi
 20                35.0
 50                70.1
 75               105.1
100              140.2     
125              175.2
150              210.3
175              245.3
200              280.4

Any help is much appreciated. I have almost all of it done up until there if anyone else needs help with previous questions.
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#1
Staff Member
12 years ago
Don't you use: Rate of Change = (y2 - y1) / (x2 - x1) ?

Remember, if you were to plot this, the graph should be linear because the relationship between pressure and blood flow is linear.
- Master of Science in Biology
- Bachelor of Science
Da_Capo Author
wrote...
#2
12 years ago
Undecided
So let me see if I'm on the right track......
the rate of change will stay constant since it is linear so I will only have to use the difference between two different pressure settings:

the x's are the difference in ml/mm readings   70.1-35=35.1
and the y's are the difference in mm/hg reading  50-20=30

Making the answer I think Thinking Face 30/35.1 ml/min/hg

Did I do this correctly? It has been a very long time since I've needed any math.
Answer accepted by topic starter
Da_Capo AuthorDa_Capo
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#3
Posts: 42
Rep: 2 0
12 years ago
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Answer rejected by topic starter
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#4
Educator
12 years ago
Quote from: ksawyerwieland (12 years ago)
30/35.1 ml/min/hg

Yes, thanks Duddy, and you've done the correct calculation.
Da_Capo Author
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#5
12 years ago
 Thinking Face

                    I'm not quite sure I get it yet.... Neutral Face

      Should the answer be expressed as a fraction and why or why not?


   Thanks!
wrote...
#6
12 years ago
When I calcluate the slope of the line, I am getting 1.4. Did you get your grade back for this? Was your calculation correct, or was it 1.4?
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