Kidney Dialysis Simulation Lab Activity Answers To Math

Kidney Dialysis Simulation Lab Activity Answers To Math Average ratng: 3,7/5 318 votes

Lab 3 - Homeostasis
Please follow these four steps:
Go to Step: 1 2 3 4

Step One
Lab Three is about homeostasis a state of balance in the body. The balance is maintained through a series of negative feedback mechanisms that keep the body functioning normally.
Instructions: Click on the following links to view the Pre-Lab Lecture Tutorials on basic concepts of Homeostasis.

Lab 3 Tutorial by Mitch Albers

  • Introduction to Homeostasis

Please refer to chapter 4, p.70 in Sylvia S. Mader's Human Biology texbook for more details on the Structure and Function of Cells.
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When you have completed the Mini Lectures you are ready to move onto the next secton, Lab Activity.

Pre-Lab Lecture
Objective
To understand how the body maintains a state of balance through homeostasis.

To understand the role of negative feedback in controling body systems.

Standard in-center HD- in a dialysis center 3 times a week, for about 4 hours per treatment 2. Nocturnal in-center HD- in a dialysis center at night 3 times a week, for about 3 hours per treatment 3. Standard home HD- at home 3 times a week or every other day, for 4-6 hours per treatment 4. Peritoneal dialysis. Peritoneal dialysis During peritoneal dialysis, a cleansing fluid (dialysate) is circulated through a tube (catheter) inside part of your abdominal cavity (peritoneal cavity). The dialysate absorbs waste products from blood vessels in your abdominal lining (peritoneum) and then is drawn back out of your body and discarded.


Step Two
This 'Hands On' lab experiment is titled, 'Human Homeostasis'. In this laboratory, the interactive simulation of human homeostasis provides students the opportunity to explore how our body maintains a stable internal environment in spite of of the outside conditions, within certain limits. This simulation allows students to investigate a phenomenon that may in real life, be dangerous to humans. Students are asked to regulate the internal body temperature of an individual using clothing, exercise, and perspiration. Click here to review homeostasis of body temperature.

Click here to download and print the Student Exploration Sheet. The Student Exploration Sheet will guide you through the simulation, including a short prior knowledge piece providing information on how to use the simulation and introductory questions.

Don't Panic..I understand your not a PhD physiologist, but the focus in this excercise will be to understand how the body maintains homeostasis in terms of regulating body temperature.

Please go to the following links to get all the instructions for doing your experiments.

EXPERIMENT ONE:

Step One: Go to the 'Gizmos' website homepage and select the 'Free Trial' button in the upper right menu (https://www.explorelearning.com)

  • Register a free student 'Free Trial' account for 30 day access to the Gizmos website.
    • You'll be asked to enter your Email address and Gizmos will send you an Email message with a link to activate your free trial account.
    • You'll be asked to compete your account information. be sure to select the blue 'Home User Trial' button for trial type.
      • Under Teaching Info select:
        • State: 'Minnesota'
        • Grade Levels 'Grades 9-12'
        • Title 'Tutor'
      • After you set up your account you'll land on a page of sample Gizmos activites. Select the 'Find Gizmos' button from the top menu bar and enter the search term 'Human Homeostasis'.
      • A list of new Gizmos interactive activites will show up. Scroll down the page to the the 'Human Homeostasis Exercise' and select the 'Launch Gizmos' link (as shown in the image below).
      • When you launch the Human Homeostasis Gizmos link you'll come to the interactive module that looks like this screenshot:

Step Two:Click on this link to Download and then print out the Human Homeostasis Student Exploration Sheet:

  • A.) Two separate activities are included: one that helps you understand the how each external factor affects initial body temperature and another that allows students to explore effects on body temperature after one hour. In the second portion of the interactive simulation students try to maintain a stable body temperature when the factors are changed. Students choose the factors of exercise level, sweat level, body position, clothing, and nutrients in terms of both water and food to maintain homeostasis. The simulation generates data tables and graphing during specific time intervals of outside temperature and body temperature. Students may also alter the outside temperature as part of the simulation. Students adjust the exercise level, amount of clothing, and sweating levels. Water level, sugar level, and fatigue level are influenced by the students’ choices and are illustrated by bar graphs and line graphs.
    • This interactive simulation provides students with a strong introduction to how body systems interact as the simulation illustrates how to maintain body temperature, sugar level and fatigue level and students are made aware of the consequences of not maintaining those levels. The importance of water and food are also emphasized. Students can rerun the simulation making different choices to determine the effects on homeostasis.
  • B.) Using the Student Exploration: Human Homeostasis Sheet and the Gizmos Human Homeostatis interactive module complete the following:
      1. Prior Knowledge Questions
      2. Activity A: Body Temperature
      3. Activity B: Thermoregualtion
        • Besure to answer Questions 6 and 7.
          • Think and Discuss - Can you identify other methods used to maintain body temperature?
          • Critique - Can you identify limitations of this simulated exercise?
          • Be sure to complete the 'Assesment Questions' located below the Human Homeostasis interactive module.
            • Select the 'Check Answers' option.

    Note:Soundtoys bundle mac crack. Please keep your responses and this sheet in preparation of the Lab 3 Quiz you'll be taking in D2L and for the Wiki Assignment for Lab 3. You do NOT need to turn this sheet into your intructor.

Experiment Two: Step Test (Do this at home)

  • Now try a real test on your own cardiovascular system!
  • Take your resting pulse rate while sitting down in a chair by following these simple directions:
  • Your heart rate can be taken at any spot on the body at which an artery is close to the surface and a pulse can be felt. The most common places to measure heart rate using the palpation method is at the wrist (radial artery) and the neck (carotid artery). Other places sometimes used are the elbow (brachial artery) and the groin (femoral artery).
    To take your resting heart rate at the wrist, place your index and middle fingers together on the opposite wrist, about 1/2 inch on the inside of the joint, in line with the index finger. Feel for a pulse. When you find a pulse, count the number of beats you feel within a one minute period. You can estimate the per minute rate by counting over 30 seconds and doubling the result.
    You should always use your fingers to take a pulse, not your thumb, particularly when recording someone else's pulse, as you can sometimes feel your own pulse through your thumb.
  • Record your resting Pulse Rate: _____ /minute
  • Step Test - Go to a stairway and have a watch or clock in view to keep track of time. Step up and down on one step at a constant rate for 3 minutes. After the three minutes, sit down in a chair and take your pulse rate again.
  • Record your Pulse Rate after the step test : _____ /minute
  • Continue measuring your pulse rate until your pulse returns back to your resting rate (recovery time). Measure how long it takes your pulse rate to return back to normal.
  • Record the time (recovery time) in minutes: _____
  • Using your knowlege and experience from the CardioLab what is happening to your heart when your exercising during the step test?
  • How did your pulse rate return to normal?
  • Explain how homeostasis is involved.


Reference: Harvard Step Test


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When you have completed the Activity you are ready to move onto the next secton, Assignment.

Lab Activity
Objective
The hands on lab activities are designed to give you a real lab experience with each weeks lab topic. Virtual lab activities will also be utilized to enhance the hands on activities.


Step Three
Select the links below to launch the Lab Wiki page and to view the interactive Study Mate pre-quiz for this lab.

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When you have completed the Assignment you are ready to move onto the next secton, Practice Quiz.

Assignment
Objective
This is required and each Lab Quiz is worth 10 points. Login to D2L to take the Lab Quiz before the due date.


Step Four

Instructions: Test your knowledge on homeostasis.

Practice Quizzes

When you have completed taking the practice quizzes you are then ready to take the LAB 3 QUIZ in D2L. Please check the course syllabus to make sure that you complete the lab quiz by the scheduled due date. Select the following link to go to D2L:

When you have completed the Practice Quizzes you should be ready for the Lab 3 Quiz in D2L and the scheduled Lab Exam I .

Practice Quiz
Objective
These interactive quizzes are designed to help you prepare for the Lab Quiz and upcoming Lab Exam I.
Good Luck!


Kidney Filtration

Purpose: Model how kidneys filter blood.Materials:
  • Cornstarch
  • Iodine
  • Water
  • Two drinking glasses
  • Measuring cups
  • Measuring spoons
  • Sandwich baggie
  • Twist tie
  1. Add one teaspoon of cornstarch to 1/8 cup of water.
  2. Stir.
  3. Add 3/4 cup of hot water and stir well.
  4. Measure 1/4 cup of cornstarch mixture…
  5. …and pour into sandwich baggie. Use a twist tie to close the bag tightly.
  6. In a separate glass, mix together one teaspoon of iodine with 3/4 cup of water.
  7. Gently place the baggie into the iodine solution. Do not allow the tied end to get wet.
  8. Check the bag every three minutes for a total of fifteen minutes.
  9. Look for a color change inside the sandwich baggie.

What’s happening?

The baggie acts as a filter by allowing iodine molecules to slowly flow into the cornstarch mixture. When the iodine comes into contact with the cornstarch, a chemical reaction occurs that causes the water inside the baggie to turn dark blue or purple . Note that even though the iodine is passing through the baggie, the water in the iodine solution is not passing through the baggie (i.e., the baggie is not swelling up with water even though it is changing color). Similarly, your kidneys filter blood to get rid of harmful chemicals found in your body but leave the good fluids (e.g., red & white blood cells) in your body.

Make a Kidney Model

Supplies:

  • Cardboard
  • Coffee filters
  • Plastic tubing
  • Modeling clay
  • Two empty water bottles
  • Funnel
  • Tape (not pictured)
  • Coffee grounds (not pictured)
  • Water (not pictured)
  • Glass measuring cup or small pitcher (not pictured)
  • Container (not pictured)

Procedure:

  1. Cut two water bottles in half.
  2. Attach a 10-inch piece of plastic tubing to the bottle using modeling clay, making a clay plug to place into the opening of the water bottle (where the lid normally screws onto the bottle). Ensure that the plastic tubing is open to the inside of the bottle but that there are no gaps between the tubing and the clay and between the bottle and the clay. The bottles are the two “kidneys,” and the tubes are the “ureters.”
  3. Tape the two “kidney” water bottles onto the cardboard box.
  4. Tape a funnel to the cardboard underneath the two “kidneys,” and tape the two “ureters” to the inside of the funnel.
  5. Carefully place a few coffee filters into each “kidney.”
  6. Mix some coffee grounds into some water.
  7. After placing a container underneath the funnel, pour the coffee ground solution into the “kidneys.”
  8. Observe the “kidneys” filtering out the coffee grounds…
  9. …as the water runs down the ureters and exits through the funnel. The coffee grounds actually change the water to a yellowish color! (Eww! Gross!)

To learn more about how your kidneys work, refer to Unit 7: Body Organsof the free ebook Classic Elementary Life Science. Be sure to also download the corresponding parent text!

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