1. Physical Activity and Fitness
Chapter 3
Physical Activity and Fitness
Lesson 3
Exploring the Circulatory System
Teacher’s notes are available in the notes section of this presentation.
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2. The group of organs and tissues that act as transfer stations carrying needed materials to cells and removing their waste products
circulatory system
Blood vessels that carry blood away from the heart to various parts of the body
arteries
Blood vessels that carry blood from all parts of the body back to the heart
veins
Click to reveal the definitions.
Tiny blood vessels that carry blood to and from almost all body cells and connect arteries and veins
capillaries

3. pulmonary circulation
When blood travels from the heart, through the lungs, and back to the heart
systemic circulation
When oxygen-rich blood travels to all body tissues except the lungs
The force of blood pushing against the walls of the blood vessels
Click to reveal the definitions.
blood pressure

4. In this lesson, you will be able to
identify the functions of the circulatory system.
describe how blood circulates through the body.
recognize how to care for your circulatory system.

5. Your Heart and Blood Vessels
The circulatory system includes the heart, the blood vessels and the blood itself.
circulatory system The group of organs and tissues that act as transfer stations carrying needed materials to cells and removing their waste products
The circulatory system is also called the cardiovascular system. Cardio refers to the heart, and vascular refers to the blood vessels.
Is also called the cardiovascular system
cardio refers to the heart
vascular refers to the blood vessels.

6. Your Heart and Blood Vessels
The Heart

8. a muscle that acts as a pump for the circulatory system
The Heart
a muscle that acts as a pump for the circulatory system
blood is pumped from the heart to the body’s cells – back to the heart
usually beats from 60 to 100 times per minute
can go much faster when it needs to
It beats about 100,000 times a day
more than 30 million times per year
about 2.5 billion times in a 70-year lifetime.

9. Your Heart and Blood Vessels
heart is a muscle
network of blood vessels over 80,000 miles long.
The heart pumps blood around the body through
a network of arteries, veins, and capillaries.
arteries Blood vessels that carry blood away from the heart to various parts of the body
The heart is a special muscle that serves as the center of the circulatory system.
The network of blood vessels in the body is over 80,000 miles long.
veins Blood vessels that carry blood from all parts of the body back to the heart
capillaries Tiny blood vessels that carry blood to and from almost all body cells and connect arteries and veins

10. The Process of Circulation
The process of circulation involves pulmonary circulation and systemic circulation.
pulmonary refers to the lungs
systemic relates to the body
pulmonary circulation When blood travels from the heart, through the lungs, and back to the heart
Pulmonary circulation:
The word pulmonary refers to the lungs.
When blood travels this path, it pulmonary refers to the lungs.
Systemic circulation:
The oxygen-rich blood also delivers other nutrients to the cells and picks up waste products.
systemic circulation When oxygen-rich blood travels to all body tissues except the lungs
The oxygen-rich blood also delivers other nutrients to the cells and picks up waste products from the cells

11. Page 72 in textbook

13. A certain amount of blood pressure is needed to make blood circulate.
blood pressure The force of blood pushing against the walls of the blood vessels

14. A blood pressure reading measures two numbers. example 110/70
The first is systolic pressure and the second is diastolic pressure.
Systolic pressure:
When the heart contracts and pumps blood into the arteries.
Diastolic pressure:
When the heart relaxes to refill with blood.

15. blood pressure The force of blood pushing against the walls of the blood vessels
Systolic pressure:
first number – 110
When the heart contracts pushing the blood out and into the arteries
Diastolic pressure:
second number – 70
When the heart relaxes (between heart beats) to refill with blood

16. What Makes Up Your Blood?

17. What Makes Up Your Blood?
Blood is made up of plasma, red blood cells, white blood cells, and platelets.
plasma The yellowish, watery part of blood
Plasma makes up over half the volume of blood.

18. Page 74 in textbook show pictures of what they look like
What Makes Up Your Blood?
job is to transport nutrients, hormones, minerals and blood cells
92% of plasma is water
Plasma
The body’s main defense against germs and bacteria. Helps destroy disease germs
White Blood Cells
Platelets
&
Red Blood Cells
Blood cells which help the blood to clot
keeps you from losing too much blood when you bleed
Carries oxygen to the cells
throughout the body
Page 74 in textbook show pictures of what they look like

19. In this lesson, you will be able to
identify the functions of the circulatory system.
describe how blood circulates through the body.
recognize how to care for your circulatory system.

20. Some blood types are compatible and others are not compatible.
Red blood cells are one of four types: A, B, AB, or O.
Most people’s blood contains a substance called an Rh factor, a type of protein.
Some blood types are compatible and others are not compatible.
People who have an Rh-factor in their blood are called Rh-positive.
Rh negative people do not have this substance in their blood.
Rh-negative people can only receive blood donations from people who are Rh-negative.
Rh-positive people can receive blood donations from either Rh-positive or Rh-negative donors.
Knowing what blood type you have is important for a person who may need blood from a donor during surgery.
Some blood types are compatible and others are not compatible.
People who have an Rh-factor in their blood are called Rh-positive. Rh negative people do not have this substance in their blood.
Rh-negative people can only receive blood donations from people who are Rh-negative.
Rh-positive people can receive blood donations from either Rh-positive or Rh-negative donors.

21. Blood Types and Compatibility
Type O
>>> Compatible with all others
O-negative
is call a universal donor
Type A
Type B
Type AB

22. Caring for Your Circulatory System
Tips for Caring for Your Circulatory System
Make aerobic activity a habit.
Follow a balanced food plan that is low in fats.
Aerobic Activity
Improves cardiovascular endurance, which helps the circulatory system
Increases the heart’s capacity to pump blood
Muscles receive more oxygen
Lessens fatty buildup in arteries
Helps achieve a healthy weight, which means the heart doesn’t have to work too hard
Manage Stress
Stress can strain the heart and blood vessels
Avoid Tobacco
Tobacco narrows the blood vessels, cutting down the oxygen supply
Develop strategies for managing stress.
Avoid using tobacco.

23. Make aerobic activity a habit.
Caring for Your Circulatory System
Make aerobic activity a habit.
Improves cardiovascular endurance, which helps the circulatory system
Increases the heart’s capacity to pump blood
Muscles receive more oxygen
Lessens fatty buildup in arteries
Helps achieve a healthy weight, which means the heart doesn’t have to work too hard

24. Caring for Your Circulatory System
Follow a balanced food plan that is low in fats.

25. Caring for Your Circulatory System
Develop strategies for managing stress.
Stress can strain the heart and blood vessels
Avoid using tobacco.
Tobacco narrows the blood vessels, cutting down the oxygen supply

26. Lesson 3 Review
What I Learned
Identify What is the function of the circulatory system?
It carries the needed materials to cells and removes their waste products
It carries the needed materials to cells and removes their waste products.

27. What I Learned Vocabulary Define blood pressure. Lesson 3 Review
Blood pressure is the force of blood pushing against the walls of blood vessels.
Blood pressure is the force of blood pushing against the walls of blood vessels.

28. What I Learned Explain Why can’t certain blood types be combined?
Lesson 3 Review
What I Learned
Explain Why can’t certain blood types be combined?
because the red blood cells will clump together and block the blood vessel
because the red blood cells will clump together and block the blood vessel

29. Lesson 3 Review
What I Learned
Distinguish What is the difference between pulmonary and systemic circulation?
Pulmonary circulation moves blood back and forth between the heart and lungs.
Systemic circulation moves blood back and forth between the heart and the rest of the body except the lungs.
Pulmonary circulation moves blood back and forth between the heart and lungs. Systemic circulation moves blood back and forth between the heart and the rest of the body except the lungs.

30. Lesson 3 Review
Thinking Critically
Infer Why do you think a blood pressure reading is part of a typical medical checkup?
High blood pressure is harmful to the cardiovascular system.
High blood pressure is harmful to the
cardiovascular system.

31. Lesson 3 Review
Thinking Critically
Apply In what ways do you think building cardiovascular endurance now will benefit you later in life?
Sample answer: It will make your heart stronger and help prevent fatty buildup in your arteries.
Sample answer: It will make your heart stronger and help prevent fatty buildup in your arteries.

32. Physical Activity and Fitness
End of
Chapter 3
Physical Activity and Fitness
Lesson 3
Exploring the Circulatory System
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