1. Introduction to the Circulatory System

2. Structures of the Circulatory System
Heart
Blood
and Blood Vessels
- Arteries
-Veins
-Capillaries

3. FUNCTION OF The Circulatory System
The overall function of the circulatory system is to transport materials throughout the body toward and away from particular target organs and tissues.

4. Two Circulation Pathways
Pulmonary Circulation
-Carries blood to lungs and
back to the heart
Systemic Circulation
-Carries blood to body and

5. Arteries Vs. Veins….There is a Difference….
Arteries - ALWAYS carry Blood Away from The Heart
Veins - Always Carry Blood Back to the Heart

6. Capillaries Smallest vessels in the Body Microscopic
Walls one cell thick
Nutrients and gases Exchange with Cells here

7. LETS Look at the Heart….

8. Structure of Heart Four chambers Two upper (Atria) Right Atria
Left Atria
Two lower (Ventricles)
Right Ventricle
Left Ventricle

9. Your Heart: The Vital Pump
At REST, the heart pumps about 5 QUARTS of blood a minute.
During EXTREME EXERTION (exercise) it can pump 40 quarts a minute.

10. The Blood Body contains 4-6 L Consists of Water Red Blood Cells Plasma
White blood cells and platelets

11. Erythrocytes (RBC) Transporters of Oxygen Carbon Dioxide
RBC are produced in red bone marrow of
ribs,
humerus,
femur,
sternum, and other long bones

12. Leukocytes (WBC) WBC fight infection Attack foreign substances
Less abundant
Large cells

13. Platelets PLATELETS are for CLOTTING blood Cell fragments
Produced in bone marrow
Fibrin (sticky network of protein fibers)
Form a web trapping blood cells

14. Keeping Your Circulatory System Healthy
Maintain a healthy weight.
Don't smoke.
Exercise a minimum of 60 minutes a day, most days of the week.
Maintain a healthy diet with more fruits, vegetables
Avoid trans fats
AVOID processed foods and fast food.

15. Circulatory system 3 min https://www.youtube.com/watch?v=f9ONXd_-anM