1. The Circulatory System
Dr. Shelander
7th Grade
East Cobb Medical School

2. An Overview of the Circulatory System
Check out how the heart works on the Web!!
How the Heart Works

3. Where the Heart is located

4. Circulatory or Cardiovascular System
Circulatory System – Keeps the body working by delivering oxygen to body cells and removing waste (Co2) from the cells.
Delivering
Removing

5. Parts of the Circulatory System
The Heart - is divided into FOUR Chambers

6. Three Kinds of Blood Vessels
Arteries – Carries blood away from the heart
Veins – Carries blood back to the heart
Capillaries – Delivers low-oxygen blood to veins (Smallest)

7. Parts of the Blood
Red Blood Cells – Made in bone marrow; carries oxygen, food, and rids body of CO2 and Waste
White Blood Cells – Help fight disease and infection by destroying bacteria and germs that enter the body. Made in the lymph nodes

8. Parts of the Blood
Platelets – Help blood to clot, to prevent excess bleeding.
Plasma – Water portion of the blood; 55% of blood is plasma

9. Four Types of Blood Type A: 42% Accepts A and O
Type B: 10% Accepts B and O
Type AB: 3% Accepts AB and O
Type O: 45% Universal Donor
RH Factor = is the + and – of the blood

10. Four Filters of the Blood
Liver
Kidneys
Lymph Nodes – located in the neck
Spleen – Cemetery for the red blood cells

11. How Blood Moves Through the Heart

12. How Blood Moves Through the Heart

13. Blood Pressure: (Hypertension)
Blood Disorders
Blood Pressure: (Hypertension)
The force or pressure developed by the heart, which acts to pump blood through the circulatory system.

14. Two Distinct pressures that are measured!!
Blood Pressure
Two Distinct pressures that are measured!!
Systolic: A measure of the maximum force or pressure developed in the arteries when the heart contracts
Diastolic: A measure of the lowest pressure, which occur in the arteries during cardiac relaxation.

15. Blood Pressure
High Blood Pressure: Continuous elevation of blood pressure above the normal range.
Ex. 140/90

16. Blood Pressure
Sphygmomanometer: An instrument used to measure blood pressure.
Stethoscope: An instrument used to listen to the sounds of the heart, or listen to the flow of blood through the vessels when measuring the blood pressure.

17. Arteriosclerosis
Arteriosclerosis: Artery walls harden; caused by a diet high in fat and cholesterol.
Causes:
Smoking
Diabetes
High Blood Pressure
High Cholesterol
Overweight

18. Arteriosclerosis Prevention: Treatment:
Reduce the amount of stress in your everyday life
Change diet to reduce the amount of sodium, fats and cholesterol.
Regular Medical checkups
Treatment:
Medication
Exercise

19. Diseases and Disorders of the Circulatory System
Heart Attack: Stoppage in the flow of blood to the heart.
Prevention:
Reduce Stress
Change Diet to less intake of Sodium (Salt)
Eat less foods high in fat and cholesterol