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Circulatory System Diseases (DOC)

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					Circulatory System Diseases (English version)

RET Program: 2004

RET Teachers: Jennifer Geer José Santiago

Course: Biology 1, Anatomy and Physiology, Biology 2

Grade Level: 9-12

Sunshine State Standards: SC.H.1.4.1, SC.H.1.4.7, SC.H.3.4.1, SC.F.1.4.4, SC.F.1.4.2, SC.H.3.4.6

Lesson Objectives: Students will learn about various diseases that effect the circulatory system. Using a model of the circulatory system, students will demonstrate the effects of a clogged artery. Students will research disease prevention.

Student Objectives:    Students will study diseases that effect the circulatory system. Students will model a clogged artery. Students will compare the work of the heart with a clogged artery and unclogged artery by timing the blood flow through the model and the force required to compress the bottle.     Students will collect data in a meaningful and organized manner. Students will draw appropriate conclusions from data. Students will correctly answer questions related to the model. Students will prepare a presentation to explain their results.

Time required for lesson: two 55 minute classes

Required Materials: Circulatory system model described in the circulatory system design lesson plan, clay, paper, pencil, poster board.

Additional Resources: Computer with Internet access.

Supplemental Materials: Circulatory system poster, heart circulatory poster, overhead projector, video of the heart diseases.

Vocabulary: circulatory system, heart chambers, blood, blood vessels, arteries, pulmonary circulation system, heart rate, valves, circulatory system diseases, atherosclerosis, cholesterol, heart attack, myocardial.

Lesson Procedures: 1. Complete the circulatory system design lesson. 2. Discuss important diseases that effect the circulatory system. 3. Get into groups of three or four. 4. Formulate a hypothesis to predict the outcome of the experiment. 5. Using the model, place the clay in the tube representing the artery. 6. Add the blood to the model. 7. Record the time for the blood to flow through the model. 8. Record the number of compressions required to move the blood through the model. 9. Complete the post lab worksheet. 10. Compare the results in this lesson with the results the group obtained in the circulatory system design lesson. 11. Formulate a conclusion to explain the results from the first and second lesson.

Student evaluation: Students will be assessed on their performance on their poster presentation, post lab worksheet and their ability to work as a team and active participation in class discussions.

Teaching Tips: Circulatory system design lesson should be presented before this lesson. The single major cause of artery disease is the thickening and hardening of arterial walls by deposits of fatty materials, known as arteriosclerosis. In major vessels such as the aorta, this process is called atherosclerosis. Atherosclerosis is a disorder of large and medium-sized arteries, such as the large coronary arteries that supply the heart muscle with oxygen. The disorder is characterized by a buildup of fatty deposits, called plaques, on the inner walls of arteries (Fig. 1). These yellowish plaques consist of materials such as cholesterol, lipids, and cellular debris. Other major diseases of the aorta include true aneurysms and so-called dissecting aneurysms. The former are balloon-like swellings that result from weakening of the aorta wall, most commonly because of atherosclerosis. Atherosclerosis is a progressive disease that is characterized by a buildup of plaque within the arteries. Plaque is formed from fatty substances, cholesterol, cellular waste, calcium, and fibrin. Plaque may partially or totally block the blood's flow through an artery. Two things can happen: bleeding into the plaque, or formation of a clot on the surface of the plaque. If either of these happens and blocks the artery, a heart attack or stroke may result. Cholesterol, a monatomic alcohol found in animal fats and oils, bile, blood, brain tissue, milk, egg yolk, myelin sheaths of nerves, liver, kidneys and adrenal glands, increased blood levels of which are a risk factor for the development of coronary artery disease.

Figure 1

Post lab worksheet:

1. What do you think is the leading cause of death in the United States every year? 2. What is heart disease? 3. What type of person is likely to contract heart disease? 4. What types of behaviors and activities are bad for the heart or circulatory system? 5. How can sitting on an airplane for many hours effect the circulatory system? 6. What is Cholesterol? 7. What are the types of Cholesterol? 8. Is all cholesterol BAD? 9. What does too much cholesterol have to do with heart disease? 10. What is High Cholesterol? 11. What does smoking have to do with heart disease?

Table #1 Exercise using the circulatory system model with CLAY Liters of Blood Height Compressions Time

Helpful Links:

http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Circulation.html#arterioscleros is http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Cholesterol.html http://www.youngwomenshealth.org/spcholesterol.html


				
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