1. Members of the Cardiovascular System
Heart
Blood Vessels
Blood

2. Click here to see it in action!
The Heart
Muscular (cardiac muscle) organ in chest
2 pumps (Right and left side)
Work together to move blood all around your body
Each side has a top (Atrium) and a bottom (ventricle)
4 chambers of heart
Heart muscles contract push blood from the heart to the blood vessels

3. Key Parts Right Atrium RA Right Ventricle RV Left Atrium LA
Left Ventricle LV
Aorta
Vena Cava
Pulmonary Artery PA
Pulmonary Vein PV

6. Blood Vessels Arteries Veins Capillaries Carry blood AWAY from heart
Full FedEx Trucks travel on here
Veins
Carry blood back TO the heart
Empty FedEx Truck travel on here
Capillaries
Teeny, tiny blood vessels that connect to arteries and veins
Nutrients and gas can pass through the capillaries from the blood to the cells that need them

7. Circulation Is Like FedEx Delivery Service
Oxygen molecules packages everyone is ordering from their homes (tissues all over the body)
Lungs Warehouses with the packages (oxygen)
Tissues individual homes, placing orders for the oxygen
Heart the distribution center of the body with the trucks needed to pick up packages from lungs and then deliver them to tissues
that directs trucks (RBCs)
Red Blood Cells (RBCs)delivery trucks carrying packages
they are either full of packages to deliver or empty
Arteries and Veins ONE-WAY roads trucks travel on
Clogged arteries, plaque build up  Traffic Jams/lane closures/road blocks

8. Flow of Blood
RBCs go from RA to RV thru Pulmonary Arteries to LUNGS to pick up oxygen

9. Flow of Blood
Oxygenated blood enters LA, then the LV and then gets sent through the AORTA to deliver oxygen to tissues

10. Flow of Blood
Oxygen and nutrients travel from ARTERIES thru CAPILLARIES to cells
Deoxygenated blood and Waste (CO2) leaves cellscapillariesveins to be carried back to heart
(to be sent back to lungs to pickup more oxygen)

11. Flow of Blood
Waste and deOXY blood enter RA, the RV and then get get pumped out of the PULMONARY ARTERY to the lungs to get OXYGEN
need to go to factory to pick up more packages

12. Flow of Blood
Blood now has oxygen and returns to the heart through the PULMONARY VEIN to the LA, then LV, then back through the AORTA to start delivering more oxygen

13. Factors That Affect Blood Flow
Heart Rate
Beats per minute (bpm)
Avg. adult at rest: bpm
Exercise, stress, chemicals increases bpm

14. Blood Pressure
The force of the blood pushing against the walls of the arteries
Your blood pressure is at its highest when the heart beats, pumping the blood. This is called systolic pressure.
When the heart is at rest, between beats, your blood pressure falls. This is the diastolic pressure.
Each time the heart beats (about times a minute at rest), it pumps out blood into the arteries.

16. Cardiovascular Disease Causes
Heart attack and stroke are two main causes of death resulting from the following conditions:
Atherosclerosis
Condition in which fatty deposits called PLAQUE build up on the inner walls of arteries
Results in blood clots
High Blood Pressure
Condition where heart and blood vessels are being overworked
HYPERTENSION
Leads to other diseases

17. Atherosclerosis
Plaque is made up of fat, cholesterol, calcium, and other substances found in the blood.
Over time, plaque hardens and narrows your arteries
This limits the flow of oxygen-rich blood to your organs and other parts of your body
Leads to blood clots, heart attack, stroke and DEATH

18. Causes and Prevention of Atherosclerosis
Certain traits, conditions, or habits may raise your risk for the disease…called RISK FACTORS
Uncontrollable RISK FACTORS
Age
Family History of heart disease
Controllable RISK FACTORS
Physical Activity
Smoking
Unhealthy diet
MAIN TREATMENT for atherosclerosis:
lifestyle changes
medicines and medical procedures

19. Hypertension TWO WAYS To create High Blood Pressure (Hypertension)
Extra fluid in the body increases the amount of fluid in blood vessels and makes blood pressure higher
Infection/disease
Narrow, stiff, or clogged blood vessels also raise blood pressure
Due to plaque build up