Chapter 13 Resource: Circulation and Immunity

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Name Date ClassLaboratory Activity 1 (continued)Hands-On ActivitiesFigure 21.Blood to heartBlood from heart6.Blood to heart2.7.3.4.8.9.5.Part B—Inside of Heart1. Your teacher will slice open the heart witha scalpel.2. Note the thickness of the muscle thatmakes up the left and right ventricles.3. Locate and label the heart valves betweenatria and ventricles. Valves keep bloodflowing in one direction.4. Locate and label the valves where thepulmonary artery and aorta are joined tothe heart.10.Part C—Condition of Blood in Heart1. Use a blue pencil to color in the spaces onFigure 2 to show where deoxygenated bloodwould be. Blood returning to orpumped from the right side of the heart isdeoxygenated. This means that the amountof oxygen in the blood is low.2. Use a red pencil to color in spaces to showwhere oxygenated blood would be.Oxygenated blood contains a large amountof oxygen. Those vessels returning to orleaving the left side of the heart carryoxygenated blood.Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.10 Circulation and Immunity
Name Date ClassLaboratory Activity 1 (continued)Data and Observations1. Label and color Figure 2 as instructed in the Procedure. NOTE: Notice that Figure 2 shows theleft and right sides of the heart reversed. The diagram actually shows the position of the heartin a person as it would appear if you were facing that person whose heart is shown.2. Complete Table 1. Use the words oxygenated or deoxygenated to describe the condition of theblood in each part. (See Part C of the Procedure.)Table 1Hands-On ActivitiesPartAtriumVentricleVena cavaAortaPulmonary veinPulmonary arteryRight sideLeft sideQuestions and Conclusions1. To what part of the body is blood pumped as it passes through the pulmonary artery?Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.2. From what part of the body is blood being returned to the heart as it passes through thepulmonary veins? Through the vena cava?3. If blood leaves the right side of the heart deoxygenated and returns to the left side oxygenated,what gas has been added to the blood? Through what organ must the blood pass in order tochange in this way?4. Explain why the muscle of the left ventricle is thicker than the muscle of the right ventricle.5. Explain the function of the heart valves.Circulation and Immunity 11
Page 1 and 2: Glencoe ScienceChapter ResourcesCir
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Page 7 and 8: Name Date ClassMicroorganisms and D
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Chapter 13 Resource: Circulation and Immunity

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