chapter 3 physical activity and fitness lesson 3 exploring the circulatory system next >>...
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Chapter 3Physical Activityand Fitness
Lesson 3Exploring theCirculatory System
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circulatory systemThe group of organs and tissues that act as transfer stations carrying needed materials to cells and removing their waste products
Blood vessels that carry blood away from the heart to various parts of the body
Blood vessels that carry blood from all parts of the body back to the heart
arteries
veins
pulmonarycirculation
When blood travels from the heart, through the lungs, and back to the heart
When oxygen-rich blood travels to all body tissues except the lungs
The force of blood pushing against the walls of the blood vessels
systemiccirculation
blood pressure
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.
Predict
Look over the headings in this
lesson. Write a question you
think this lesson will answer.
After this lesson, look back to
see if your question was
answered.
Lesson HeadingsLesson Headings
• Your Heart and Blood Vessels
• The Process of Circulation
• What Makes Up Your Blood?
• Caring for Your Circulatory System
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
Your Heart and Blood Vessels
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
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
The Process of Circulation
The process of circulation involves pulmonary circulation and systemic circulation.
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
Blood Pressure
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
Blood Pressure
A blood pressure reading measures two numbers.
The first is systolic pressure and the second is diastolic pressure.
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.
Blood Types
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.
Blood Types and Compatibility
Type
O
Type
AType
B
Type
AB
Caring for Your Circulatory System
Tips for Caring for Your Circulatory SystemTips for Caring for Your Circulatory System
Make aerobic activity a habit.Make aerobic activity a habit.
Follow a balanced food plan that is low in fats.Follow a balanced food plan that is low in fats.
Develop strategies for managing stress.Develop strategies for managing stress.
Avoid using tobacco.Avoid using tobacco.
What I Learned
Identify What is the function of the circulatory system?
Lesson 3 Review
What I Learned
Vocabulary Define blood pressure.
Lesson 3 Review
What I Learned
Explain Why can’t certain blood types be combined?
Lesson 3 Review
What I Learned
Distinguish What is the difference betweenpulmonary and systemic circulation?
Lesson 3 Review
Thinking Critically
Infer Why do you think a blood pressure reading ispart of a typical medical checkup?
Lesson 3 Review
Thinking Critically
Apply In what ways do you think buildingcardiovascular endurance now will benefit youlater in life?
Lesson 3 Review
Chapter 3Physical Activityand Fitness
Lesson 3Exploring theCirculatory System
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