PhysioEx Exercise 1 Activity 4
2/28/22, 7:57 PM
PhysioEx Lab Report
Activity 4: Simulating Filtration Name: Zandria Date: 28 February 2022
Session ID: session-2635cd1b-28ac-5aba-3246-5f9d5872f31d
Pre-Iab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly
1 Filtration is a process that
You correctly answered: is passive
2 Filtration is dependent upon a
You correctly answered: hydrostatic pressure gradient.
3 The filtrate
You correctly answered: All of these answers are correct.
4 An important place that filtration takes place in the body is in
You correctly answered: the kidneys
Experiment Results
Predict Questions
1 Predict Question 1: What effect will increasing the pore size of the filter have on the
filtration rate?
You did not answer this question.
2 Predict Question 2: What will happen if you increase the pressure above the beaker (the driving pressure)?
Your answer: The filtration rate will increase.
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PhysioEx Exercise 1 Activity 4
2/28/22, 7:57 PM
Stop & Think Questions
1 The reason none of the solutes were present in the filtrate was that
You correctly answered: the solutes were all too large to pass through.
2 What does an increase in the driving pressure correspond to in the body?
You correctly answered: an increase in blood pressure
Post-Iab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
1 After filtration, substances that pass through the filter are called the filtrate, which
includes
You correctly answered: all of the above.
2 The top beaker in the simulation corresponds to
You correctly answered: the blood capillary.
3 Why was there not 100% recovery of the Na'cl"solute with any of the membranes?
You correctly answered: Some of the solute remained on the membrane filter.
4 An increase in blood pressure would probably initially
filtration in the kidneys.
You correctly answered: increase the rate of.
Review Sheet Results
1 Explain in your own words why increasing the pore size increased the filtration rate. Use an analogy to support your statement. How well did the results compare with your prediction?
Your answer:
the filtration rate was increased by increasing the pore size because it allowed for better/greater entrance. an analogy would be a window supplying air, as to installing a door that would then allow for greater supply. the results and my prediction were well.
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PhysioEx Exercise 1 Activity 4
2/28/22, 7:57 PM
2 Which solute did not appear in the filtrate using any of the membranes? Explain why
Your answer:
the powered charcoal failed to appear in the filtrate. this was a result of its very unstable internal matrix, that allows great surface area for absorption of surfaces. it more than likely got caught up and instead reacted with the membrane.
3 Why did increasing the pressure increase the filtration rate but not the concentration of
solutes? How well did the results compare with your prediction?
Your answer:
filtration was the only one able to increase because the pressure gradient was increased