Science 30 Unit A: Maintaining Health

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1 Science 30 Unit A: Maintaining Health Assignment booklet A

2 Chapter Assignment Science 30 Unit A: Maintaining Health Assignment Booklet A Chapter Assignment Summary Total Possible Marks 58 For Teacher s Use Only Your Mark Teacher s Comments This document is intended for You may find the following Internet sites useful: Students Teachers Administrators Home Instructors General Public Other Alberta Education, Learning Resources Centre, Tools4Teachers, Exploring the electronic information superhighway can be educational and entertaining. However, be aware that these computer networks are not censored. Students may unintentionally or purposely find articles on the Internet that may be offensive or inappropriate. As well, the sources of information are not always cited and the content may not be accurate. Therefore, students may wish to confirm facts with a second source. Copyright 007, Alberta Education. This resource is owned by the Crown in Right of Alberta, as represented by the Minister of Education, Alberta Education, Street, Edmonton, Alberta, Canada T5J 4L5. All rights reserved. This resource was developed by or for Alberta Education. It may be reproduced in any form, including photocopying, without written permission from Alberta Education provided that associated copyright notices are also reproduced. THIS RESOURCE IS NOT SUBJECT TO THE TERMS OF A LICENCE FROM A COLLECTIVE OR LICENSING BODY, SUCH AS ACCESS COPYRIGHT.

3 58 Assignment Booklet A Assignment Booklet A Science 30: Unit a Chapter assignment This Assignment Booklet is worth 58 marks out of the total 34 marks for the assignments in Unit A. The value of each assignment and each question is stated in the left margin. Read all parts of your assignment carefully, and record your answers in the appropriate places. If you have difficulty with an assignment, go back to the textbook and review the appropriate lesson. Be sure to proofread your answers carefully before submitting your Assignment Booklet. Chapter Assignment: Circulation and Immunity. Match the following parts of the heart. Place your answers in the blanks provided. I II The Human Heart IV V III VI a. aorta b. right ventricle c. pulmonary vein d. septum e. semilunar valve f. vena cava

4 Assignment Booklet A. Match each function with the appropriate structures listed. Place your answer in the blanks provided. i. collects deoxygenated blood from the body ii. maintains the proper direction of the blood through the heart iii. receives oxygenated blood from the lungs iv. sends deoxygenated blood to the lungs v. sends oxygenated blood to the body vi. separates the left and right halves of the heart a. any heart valve b. aorta c. pulmonary artery d. pulmonary vein e. vena cava f. septum 3. Decide whether each statement is true (T) or false (F). Place your answer in the blank space given. a. All arteries carry oxygenated blood and all veins carry deoxygenated blood. b. The heart rate increases as a person who was initially at rest starts exercising. c. The flow of blood in the body is due to a back-and-forth motion caused by tidal forces. d. The lub-dub heart sound that a doctor hears through a stethoscope comes from the heart valves. 4. There is a difference in the action of the heart chambers during the processes of systole and diastole. Describe this difference. 5. An athlete has a stroke volume of 85 ml per heartbeat and a heart rate of 64 beats per minute. Calculate, in litres, the volume of blood pumped over one year.

5 3 Assignment Booklet A 5. An athlete has a stroke volume of 85 ml per heartbeat and a heart rate of 64 beats per minute. Calculate, in litres, the volume of blood pumped over one year. Return to page 4 of the Distributed Learning Student Guide, and begin Lesson.. For questions 6 to0, read each question carefully. Decide which of the choices BEST answers the question. Place your answer in the blank space given. 6. Suppose an anesthetic enters a capillary below the skin and continues its journey through structures of the circulatory system. Along what sequence of structures does the anesthetic continue its journey? A. vein, artery, heart, venule, arteriole B. arteriole, venule, heart, artery, vein C. venule, arteriole, heart, vein, artery D. venule, vein, heart, artery, arteriole 7. What factor should be the manipulated variable in an investigation studying the effects of caffeine on heart rate? A. amount of caffeine consumed B. temperature of the room C. blood pressure D. heart rate 8. A person s circulatory system can be compared to a municipality s water delivery system. If the pipes from the pump to a block of houses can be thought of as arteries and the pipes inside the house as capillaries, what should the pipes carrying water into the home be called? A. veins B. aortas C. venules D. arterioles 9. Where does the fluid pressure of blood fluctuate the most? A. veins B. venules C. arteries D. arterioles

6 Assignment Booklet A 0. A doctor reported a patient s blood pressure to be 0/80. What was the patient s systolic blood pressure? A. 40 mmhg B. 80 mmhg C. 0 mmhg D. 00 mmhg. While the heart s chambers are relaxing, there is still residual pressure in the arteries. Give a reason for this pressure.. A doctor uses a sphygmomanometer to measure a patient s blood pressure. The doctor pumped up the cuff somewhat above the expected blood pressure. Then the doctor released the air slowly while listening for a pulse through a stethoscope. Describe how the change in the sound coming through the stethoscope is used to obtain blood pressure measurements Describe the role of the valves in leg veins. Return to page 6 of the Distributed Learning Student Guide, and begin Lesson.3. For questions 4 to 6, read each question carefully. Decide which of the choices BEST answers the question. Place your answer in the blank space given. 4. When a blood sample is spun in a centrifuge, the blood separates into layers. Which blood component will occupy the top half of the sample? A. plasma B. platelets C. white blood cells D. red blood cells

7 3 3 5 Assignment Booklet A 5. Which blood component is responsible for starting the clotting process? A. plasma B. platelets C. white blood cells D. red blood cells 6. Which blood component provides protection against disease-causing bacteria that have invaded the body? A. plasma B. platelets C. white blood cells D. red blood cells 7. Explain why paleness, weakness, and fatigue may result from a diet lacking iron. 8. Explain why exposure to carbon monoxide can be fatal. Return to page 8 of the Distributed Learning Student Guide, and begin Lesson.4. For questions 9 and 0, read each question carefully. Decide which of the choices BEST answers the question. Place your answer in the blank space given. 9. Scurvy is a disease now known to be caused by a lack of vitamin C. What food in the traditional diet of Inuit people prevented scurvy? A. limes B. sea salt C. maktaaq D. pemmican

8 Assignment Booklet A 0. The fat in which of the following food sources has a positive effect on blood cholesterol? A. meat from marine animals B. cheddar cheese C. egg yolk D. lard. Match each description with the appropriate term listed. Place your answer in the blank space given. i. angina ii. heart attack iii. stroke iv. atherosclerosis a. a chest pain due to the narrowing of vessels supplying blood to heart tissues b. the death of heart cells due to blockage in the coronary arteries c. a loss of brain function due to an area of the brain deprived of blood d. a hardening of the arteries due to fatty deposits. Two people obtained the results of a blood cholesterol test. Their results were as follows. Person Low-Density Lipoprotein (LDL) High-Density Lipoprotein (HDL) Which person has the healthier cholesterol level? Why?

9 4 Assignment Booklet A 3. Explain why a rough, cracked coating of plaque on the interior walls of arteries can cause blood clots to form. 4. Name four lifestyle choices that increase the risk of cardiovascular disease. Return to page 9 of the Distributed Learning Student Guide, and begin Lesson.5. For questions 5 to 8, read each question carefully. Decide which of the choices BEST answers the question. Place your answer in the blank space given. 5. In an immune response, which part of the immune system binds to antigens on the surface of a macrophage and sends out a chemical messenger that coordinates the action of the other immune-system cells? A. B-cells B. killer T-cells C. helper T-cells D. suppressor T-cells 6. During an immune response, some cells of the immune system expose antibodies and, thereby, cause pathogens to be immobilized and form clumps. Which cells of the immune system have this function? A. B-cells B. killer T-cells C. macrophages D. suppressor T-cells 7. Which cells signal the end of an immune response after target pathogens have been destroyed? A. B-cells B. macrophages C. memory T-cells D. suppressor T-cells

10 3 8 Assignment Booklet A 8. Which cells of the immune system cause the system to respond more quickly to re-infection by the same pathogen? A. memory B-cells and memory T-cells B. memory B-cells C. memory T-cells D. helper T-cells 9. Match each description with the appropriate term listed. Place your answer in the blank space given. i. athlete s foot ii. food poisoning iii. chicken pox iv. malaria a. fungi b. viruses c. bacteria d. protozoans 30. Explain how a vaccination can provide immunity from a disease. 3. Explain how the immune system is responsible for the symptoms of rheumatoid arthritis. 3. Explain how the pathogenic salmonella bacterium enters the human body by overcoming the body s natural defences. Submit your completed Assignment Booklet A to your teacher for assessment. Then return to page of the Distributed Learning Student Guide, and begin the Chapter Summary.