Module 8 Intro
1. Module 8 Intro
1.10. Lesson 2 Intro
Module 8—Circulation, Immunity, and Excretion
Lesson 2—Investigating the Circulatory System
Get Focused
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What happens when a valve won’t open or a pump fails in a water treatment plant? Water is diverted through alternative systems—a backup valve opens or a pump works extra hard to keep up with the demands of regulating water flow. Humans put strain on their systems when they exercise or if they have some kind of disorder. The heart must keep up with changes in the internal environment.
One way of improving a system is to fix or replace a pump. This is easy enough to do in a mechanical system. You turn a valve off, fix or replace the pump, and open the valve to resume the flow. In the human system, heart transplants have become an option where the organ is failing. However, this option has serious risks and limitations.
Many new technologies have been developed to treat heart disease or correct congenital defects. These changes have allowed many people to live with a more efficient circulatory system. Regular exercise and healthy living can be the best way to prevent heart disease and help your body maintain homeostasis.
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In this lesson you will explore the following essential questions:
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What is the relationship between the heart rate, blood pressure, and exercise?
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How can technology treat disorders of the circulatory system?
Module 8: Lesson 2 Assignment
Your teacher-marked Module 8: Lesson 2 Assignment requires you to submit a response to the following:
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Lab: Virtual Blood Pressure
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TR 1. Heart Rate Recovery
You can access your Module 8: Lesson 2 Assignment. You can print off the assignment or save the download to your computer. Your answers can be saved on this document to your course folder.
You must decide what to do with the questions that are not marked by the teacher.
Remember that these questions provide you with the practice and feedback that you need to successfully complete this course. You should respond to all the questions and place those answers in your course folder.