unit 6: the cardiovascular system
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Unit 6: The Cardiovascular System. Essential Questions. What are the different components of blood and what are their functions? How do doctors use blood smears to tell the health of a patient?. Day 1: Blood. Required Readings: Chapter 11 Learning Objectives: - PowerPoint PPT PresentationTRANSCRIPT
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UNIT 6: THE CARDIOVASCULAR SYSTEM
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Essential Questions• What are the different components of blood and what are
their functions?• How do doctors use blood smears to tell the health of a
patient?
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Day 1: Blood• Required Readings:
• Chapter 11• Learning Objectives:
• Describe the general characteristics and functions of blood• Describe the functions of the different components of blood• Explain the normal concentrations of white blood cells, and what an
elevated concentration may mean• Explain the basis of blood typing and why it is important
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Starter• What do these following terms mean to you? Discuss with
your group.• Red blood cell (erythrocyte)• White blood cell (leukocyte)• Platelet• Sickle cell• Hemoglobin• Antibody• Antigen• Plasma
• Time: 10 minutes
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Activity 1• Your group will be given one of the following to act out to
the class about red blood cells:• Structure & function• Hemoglobin – structure & function• Where is it produced & how?• Life span & destruction• Normal values & what can make the values increase or decrease
• Time: 15 minutes
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Activity 2• Your group will be given one of the 5 WBC’s:
• Neutrophils• Eosinophils• Basophils • Lymphocytes• Monocytes
• With your group, create a story board that shows how your WBC is formed, and what job(s) it has in the human body
• Time: 25 minutes
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Activity 3• Use the modeling clay to describe the process of
hemostasis (the stoppage of bleeding)• Be sure to label the different structures involved• Use the cue cards to draw a diagram to coincide with your
model• Time: 15 minutes
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Activity 4• We use the ABO blood group to type our blood• Use a diagram to help explain what is meant by antigens,
antibodies, and A, B, AB, and O blood types• Time: 20 minutes
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Closing• What are 2 new things you learned today?• What is 1 thing you still don’t understand from today’s
lesson?• Show to me before you leave
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Day 2: Blood Smears• Required Readings:
• None• Learning Objectives:
• To determine normal white and red blood cell counts• To observe various blood smears• To identify the functions of blood and the cardiovascular system
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Starter• Draw a picture of a normal RBC and a sickle-shaped RBC• What is the disadvantage of having sickle-shaped RBC’s?• What is this condition called, and why is it advantageous
in some situations?• Time: 10 minutes
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Activity 1• Lab groups? Quick discussion• With your group, you will work through the Blood Smears
lab• There are some blood samples to look at on the
microscope slides, but the samples you will use for the lab are on the next PPT slide
• Time: 45 minutes
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Closing• What does an elevated WBC count mean?• How are sickle-shaped RBC different from the regular
shaped RBC’s?• Why do people who live at high altitudes have a higher
concentration of RBC’s? • What does this mean for people who train long distances
then compete in a city that is at sea level?
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Day 3: The Cardiovascular System• Required Readings:
• Chapter 12• Learning Objectives:
• Identify the parts of the heart and describe their functions• Trace the blood flow through the heart• Describe the structure and function of arteries, capillaries, and
veins• Describe how materials are exchanged between blood and
interstitial fluid• Describe blood pressure and how it is regulated• Identify the major systemic arteries and veins
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Starter• Describe how blood flows through our body including the
lungs, the heart, and body tissues• Bonus: Describe the blood flow through the heart• What materials are dropped off and picked up, and where
does it occur?• Use a diagram to help your explanation• Time: 15 minutes
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Activity 1• Read over the instructions for the mammal heart
dissection• With your group, locate the external structures on the
heart• Begin dissecting. Some of the structures will be difficult to
find, but try your best• Throw hearts out and put dissecting pans in the sink• Clean the dissecting utensils you used and put them on
the lab bench to dry• Time: 20-30 minutes
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Activity 2• We will watch a dissection video of the cardiovascular
system• Write down any questions you have as you watch the
video• Write down any interesting or new facts that you have
learned• Time: To the end of the lesson
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Homework• Bring PE clothes for next lesson
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Day 4: Exercise & HR/BP• Required Readings:
• None• Learning Objectives:
• To design and carry out an investigation• To determine the effects exercise has on heart rate and blood
pressure• To research the effects of prolonged physical activity on the
cardiovascular system
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Starter• Sit quietly for 5 minutes and relax• We will take our resting heart rates, so you need to be as
still as possible• We will then try to take our blood pressure• While you are waiting, answer these questions
individually:• What are normal resting HR values?• What are normal resting BP values?• What happens to these values after exercise? Why?• What happens to these values in a more fit individual?
• Time: 20 minutes
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Activity 1• With your group, design an experiment that will test the effects
of physical activity on an individual’s HR• We want to see how long after exercise it takes for our HR to get
back to normal• You can decide what type of exercise to do, but the amount of
time you will exercise will be a max of 3 minutes• What to include?
• Aim• Hypothesis• Variables (Controlled, Independent, Dependent)• Materials• Procedure• Data Table
• Time: 20 minutes – Show to me before you begin
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Activity 2• Carry out your investigation• You may go into the back room to put the heart rate
monitor on• Each group needs to have at least 2 individuals
participate• Time: 45 minutes
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Homework• Read Chapter 14• Lab Report – due January 24• You may choose the method of write up for the lab report,
but it must include:• Your lab plan• Background information
• Include in this section the effects of regular physical activity on the CV system
• Your results• Analysis of your results * Chapter 12 will help you with your report
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Day 5: The Respiratory System• Required Readings:
• Chapter 14• Learning Objectives:
• List the parts of the respiratory system and describe their functions• Describe the mechanisms of breathing• Describe the various respiratory volumes and explain the
significance of each one• Describe the neural control of breathing• Identify the factors that influence breathing and explain how they
produce their effect• Describe the mechanisms of gas exchange in the lungs and body
tissues• Describe how oxygen and carbon dioxide are transported in the
blood
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Starter• List as many of the organs in the respiratory system as
you can• For the organs you listed, what is their function?• Share your ideas with another group• Time: 10 minutes
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Activity 1• Make flashcards for the following structures:
• Lungs• Diaphragm • Alveoli• Heart• Vein• Artery• Capillary• Ribcage
• The front should include a picture, and the back should include a description and function of the structure• Your picture can come from the internet, or be hand-drawn
• Time: 30 minutes
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Activity 2• Create a flow chart that describes the process, mechanics
and the factors that influence breathing• Time: 20 minutes
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Activity 3• Use a diagram to help explain how carbon dioxide and
oxygen are transported throughout the blood and how gas exchange occurs
• Time: 30 minutes
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Homework• Lab report – HR & Exercise – due January 24• Work from today to be handed in on Friday
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Day 6: Lung Capacity• Required Readings:
• Chapter 14• Learning Objectives:
• Describe the mechanisms of breathing• Describe the various respiratory volumes and explain the
significance of each one
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Starter• What does the term “lung capacity” mean to you?• Do you think we all have the same lung capacity?
• If you answered no, what do you think are some things that can increase or decrease a person’s lung capacity?
• Time: 10 minutes
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Activity 1• Create a graph that shows the respiratory volumes for the
following values:• Tidal Volume• Inspiratory Reserve Volume • Expiratory Reserve Volume• Vital Capacity• Residual Volume• Total Lung Capacity
• Explain what the above terms mean• Time: 20 minutes
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Activity 2• Complete the “Exploring Breath Rates” activity with your
group (parts A, B, C, and D)• Put your results on the “Our Breathing Fitness” chart• Record your answers on a separate sheet of paper • Time: 30 minutes
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Closing• Is breathing voluntary or involuntary? Explain.• What types of activities lead to an increase in lung
capacity?
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Homework • All activities from Monday and Wednesday due Friday• Lab report – due Friday• Bring PE clothes for Friday• We will test our lung capacity on Friday as well as another
breathing activity
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Day 7: Lung Function & Breathing Fitness
• Required Readings:• None
• Learning Objectives:• Discover how exercise affects the amount of air the body uses for
respiration• Use data to calculate respiration rates• Compare breath recovery rates after jogging and sprinting
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Starter• Any questions from the last two days?• Quick discussion of what you did over the last two days• Hand in all activities you completed
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Activity 1• Read through “breath recovery” and “measuring breath
volume”• As a group, decide which activity you would like to
complete• Time: 45-60 minutes
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Activity 2• When you complete the chosen activity, return to your
seats and complete the analysis and any graphs you may need to do
• Hand this in at the end of the lesson• Time: 20 minutes
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Homework• Final project – due on Thursday
• You will get the lesson on Tuesday to work on it
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Day 8: Disorders of the Cardiovascular and Respiratory Systems• Required Readings:
• 12.8• 14.8
• Learning Objectives:• Describe the common disorders of the heart and blood vessel• Describe the major disorders of the respiratory systems
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Disorders to choose from• COPD• Asthma• Bronchitis• Emphysema• Common cold• Influenza• Laryngitis• Pneumonia• Tuberculosis• Pulmonary emoblism
• Arrhythmia
• Heart murmurs
• Myocardial infarction
• Arteriosclerosis
• Atherosclerosis
• Hypertension
• Varicose veins
• Heart attack
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Day 9: Final Projects Due