1. Cardiovascular System
Chapter 3.1

2. Circulatory System Delivers blood to all the cells of the body
Includes:
Heart
Blood
Veins
Capillaries
Arteries

3. Function of the Cardiovascular System
Transports substance around the body
Hormones
Oxygen
Nutrients from food
Cellular waste

4. The Heart Is an organ A Pump 4 chambers Made of mostly cardiac muscle
~ the size of your fist
almost in the center of your chest.

5. Heart Chambers The Atriums are the upper chambers…
They send blood to the ventricles
Left Atrium
Right Atrium
Right Ventricle
Left Ventricle
The Ventricles (work horse) are the lower chambers
Send blood out of the heart

6. Right side of the Heart
Oxygen-poor blood from the body comes into the right atrium
Passes through the tricuspid valve to the right ventricle
Passes to the pulmonary arteries and onto the lungs.
What do you think the valves are for?

7. Left side of the Heart
Oxygen-rich blood comes in from the lungs to the left atrium
Passes to the left ventricle through the bicuspid valve
Passes to the body through the aorta.

8. Blood vessels
Arteries Arterioles capillaries venules veins

9. Arteries A for Away Arteries take blood away from the heart.
Thick elastic walls lined with smooth muscles.
Heartbeat pumps blood at a high pressure
Called Blood Pressure
Stretch to withstand this pressure
Called pulse

10. Ventricles and Arteries: Pumping Blood from your Heart
Blood leaves the Heart through two ARTERIES.
Artery
Artery
Right Ventricle
Left Ventricle
The Heart pumps blood through Arteries to the Lungs to collect Oxygen.
The Heart pumps blood through Arteries to supply Oxygen to the Body.

11. Capillaries Exchange site between body and blood.
Ex. nutrients, O2, CO2, and waste
Very thin=cells travel through in single file.

12. Veins Return blood to the heart.
Need valves to keep blood flowing in one direction.

13. Atriums and Veins: How Blood gets into your Heart
Blood enters the Heart through two VEINS.
Veins
Left Atrium
Right Atrium
The Body sends blood with no Oxygen in it through veins to the Heart.
The Lungs send blood with Oxygen in it through veins to the Heart.

14. Two types of Circulation
Pulmonary Circulation
Circulation between heart and lungs
Systemic Circulation
Circulation between heart and body

15. Heart Structure
Aorta
Superior Vena Cava
Pulmonary Artery
Pulmonary Vein
Right Atrium
Tricuspid
Right Ventricle
Inferior Vena Cava
Left Atrium
Bicuspid
Aortic Semilunar Valve
Left Ventricle
Descending Aorta
******Parts to ADD
16. Septum
17. Pulmonary Semilunar valve
18. Myocardium
17.
16.
18.