Lab Part 1: Virtual Bypass Surgery (30 points)

Heart disease is the number one killer in the United States. One procedure to treat blockage in the arteries of the heart is bypass surgery. Someone you know may have already had this procedure; however, few people really realize what occurs during the surgery. The following lab will guide you through the steps of a virtual bypass surgery.

Instructions:

Go to: Virtual Bypass Surgery (http://www.abc.net.au/science/lcs/swf...)

1. Click on: Enter.

2. Click on: Anatomy to review the anatomy of the heart.

3. When you are ready to conduct the surgery, select Intern from the three choices provided (Intern, Surgeon, Specialist) – this will allow you more time to conduct the surgery.

4. Make sure you read all information on the screen.

5. Answer the following questions.

Questions:

Questions 1-10 are short answer questions and should be answered in complete sentences. Each question is worth 3 points for a total of 30 points.

1. What major artery branches into the coronary arteries?

2. What chamber of the heart pumps oxygen-poor blood to the lungs?

3. How large is the average human heart?

4. What is the purpose of the sedative that is injected prior to surgery?

5. Why is antibacterial soap used to scrub the chest prior to surgery?

6. Which member of the surgery team is responsible for assessing how the heart is functioning during surgery?

7. What vein is harvested from the leg to be grafted to the heart?

8. What is the name of the membranous sac that encloses the heart?

9. What is injected into the heart to stop it from beating?

10. What is the purpose of the drug protamine?

Instructions: Lab Part 2: Virtual Blood Pressure Lab (30 points) Chapter 17

Blood pressure is the “silent killer.” There are some risk factors that we can control and some that we cannot. In this lab, you will see the effects of various controllable and non-controllable risk factors regarding blood pressure.

Go to: Virtual Lab: Blood Pressure (http://www.mhhe.com/biosci/genbio/vir...)

1. Question 1: Click Gender and select Female. Then click Age Range and select 11-17. Now click Measure Blood Pressure on the right side of the screen.

2. Questions 2-5: Click on each individual person to view their information, and respond to the questions.

3. Questions 6-10: Click Gender and select Male.

Then click Age Range and select 45-54. Now click Measure Blood Pressure on the right side of the screen.

Questions:

Questions 1-10 are short answer questions and should be answered in complete sentences. Each question is worth 3 points for a total of 30 points.

1. What is the average blood pressure for females between the ages of 11-17?

2. Are all of the females in this group within the optimal blood pressure range? (You can view this information by clicking on each individual person.)

3. What is the medical record number of the female with the highest blood pressure in this group, and what is her blood pressure?

4. Overall, what are the

risk factors of the females in this group?

5. Would you consider that this group of females is relatively healthy in terms of their blood pressure? Briefly explain your answer.

6. What is the average blood pressure for males between the ages of 45-54?

7. How many males in this group have hypertension?

8. What is the medical record number of the males in this group with the highest blood pressure? What is his blood pressure?

9. Overall, what are the risk factors of the males in this group?

10. What advice would you give to the males to this group in order to attempt to lower their blood pressure?

Lab Part 3: Virtual Bacteria Identification (40 points)

Chapter 18

Instructions:

Go to: Virtual Bacterial Identification Lab (http://www.hhmi.org/biointeractive/vl...)

1. Click to enter the lab

2. Read the Intro: Virtual Bacterial Identification Introduction

3. Click on: Samples button at the top of the page

4. Click on: Sample D - Blood Sample

5. Follow the instructions, and complete the lab. Make sure you read the material in the notebook on the right side of the screen.

6. Answer the following questions.

Questions:

Questions 1, 2, and 6 are short answer questions and should be answered in complete sentences. Together these questions are worth 10 points (or approximately 3.33 individually). Questions 3, 4, and 5 are written response questions (just like the written response questions in the unit assessments). Your answer to each should be 100-200 words. Each written response question is worth 10 points.

1. What kinds of patient samples are used for the purpose of identifying possible pathogens?

2. What is the first thing you must do once you enter the lab – before you start the virtual experiment?

3. What does PCR do, how does it work, and why is it useful?

4. How do you separate the desired DNA from all others?

5. Why is it possible to use a DNA sequence to identify bacteria?

6. What type of bacteria was isolated from Sample D – Blood Sample?

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