1. The Circulatory System

2. ACTIVITY
Partner Up
While resting find your partner’s pulse and count the number of beats for 15 sec. Record & Calculate heart rate in beats per minutes.
While standing repeat steps in #1
March in place for 1 minute repeat step #1

3. What are we measuring?
Series of pressure waves within an artery caused by the contractions of the left ventricle
The pulse you feel is blood stopping and starting as it moves through your arteries

4. What are these contractions moving?
BLOOD & LYMPH

5. The circulatory system
What is the Circulatory System?
Combination of the
Cardiovascular System
&
Lymphatic System

6. The circulatory system
What is it’s Function?
A TRANSPORTATION SERVICE FOR CELLS THAT CARRIES TWO FLUIDS BLOOD AND LYMPH

7. Transportation service
Transports
Nutrients
Hormones
Gases
Gets Rid of
Wastes
Helps maintain constant body temp

8. Cardiovascular System
Central Organ The Heart
Pumps through a network of vessels
Beats more than 2.5 billion
Size of a fist
Made up of
Blood
Heart
Blood vessels

10. Put your hand on your heart
Did you place your hand on the left side of your chest?
Actually the heart is located almost in the center of the chest, between the lungs

11. Muscle Cell that contracts in waves
The Heart
Muscle Cell that contracts in waves
Four Chambers
Vertically divided by the septum
The right side pumps blood to the lungs
The left side pumps blood to other parts of the body

12. Each side divided into an upper & lower chamber
The Heart
Each side divided into an upper & lower chamber
Upper chamber is the atrium
Lower chamber the ventricle (PUMP)
Valves – flaps of tissue that only open in one direction.

13. The Heart
Blood pressure- the force that exerts blood against the inside walls of a blood vessel
Arteries- large muscular vessels that carries blood away from the heart

14. Circulation Two types of sub circulation systems
Pulmonary circulation - blood travels between heart & lungs
Systemic circulation – blood travels between the heat and all other body tissues

15. THE FLOW
from heart Aorta (largest artery) – smaller arteries – smaller vessels – network of tiny vessels called capillaries Capillaries exchange between cells to heart – venules – vein large blood vessels

17. Did you Know?
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
Capillaries, are so small that it takes ten of them to equal the thickness of a human hair.
lub-DUB, lub-DUB, lub-DUB. Sound familiar? If you listen to your heart beat, you'll hear two sounds. These "lub" and "DUB" sounds are made by the heart valves as they open and close

18. Lymphatic System Small organ “lymph node” System Made up of Lymph
One way system
No pump
Filters & fights disease
Made up of
Lymph
Lymph nodes
Lymph vessels

19. Transparent yellowish fluid
DESCRIBE LYMPH
Transparent yellowish fluid

20. Lymphatic System
Function
One way system that returns fluids collected in tissues “lymph” back to the blood stream

21. Lymphatic System Structure
excess fluid in the tissues moves into tiny lymph vessels – lymph vessels merge to form larger
vessels (similar to capillaries) – transported to
lymph nodes like beads on a string.
The lymph nodes filter the lymph trapping foreign particles and other debris. Stores white blood cells to fight disease

22. Lymph Node Examples
Tonsils
Thymus
Spleen
Bone marrow

23. Disease
Heart disease is the leading cause of death in the United States and is a major cause of disability.
Almost 652,091 people die of heart disease in the U.S. each year.
About 27% of all U.S Heart disease is a term that includes several more specific heart conditions.
The most common heart disease in the United States is coronary heart disease, which can lead to heart attack.
Between 70% and 89% of sudden cardiac events occur in men
Major risk factors for heart disease include high blood pressure, high blood cholesterol, tobacco use, diabetes, physical inactivity, and poor nutrition
SOURCE: CDC Men and Heart Disease Fact Sheet

24. Additional Information
American Heart Association
CDC