The cardiovascular system consists of the heart and blood vessels. The heart, made of strong cardiac muscle, has four chambers and pumps blood through two circuits. Deoxygenated blood enters the right atrium, travels to the right ventricle and lungs, then the left atrium and ventricle before being pumped through arteries like the aorta to the body. Oxygen-depleted blood returns via veins like the vena cava to the heart.

1. Cardiovascular System (pg 10)

2. Cardiovascular System (pg 10)
• Consists of the heart and blood vessels

3. Cardiovascular System (pg 10)
• Consists of the heart and blood vessels
• Function: Circulate blood through the body,
delivering oxygen and nutrients and removing
waste

4. Heart
• Made of cardiac muscle, which is very strong
and never gets tired

5. Heart
• Made of cardiac muscle, which is very strong
and never gets tired
• 4 Chambers: Right and left atria, and right and
left ventricles

6. Path of blood through the heart
1. Right atrium

7. Path of blood through the heart
1. Right atrium
2. Right ventricle

8. Path of blood through the heart
1. Right atrium
2. Right ventricle
3. Lungs (to get oxygenated)

9. Path of blood through the heart
1. Right atrium
2. Right ventricle
3. Lungs (to get oxygenated)
4. Left atrium

10. Path of blood through the heart
1. Right atrium
2. Right ventricle
3. Lungs (to get oxygenated)
4. Left atrium
5. Left ventricle

11. Path of blood through the heart
1. Right atrium
2. Right ventricle
3. Lungs (to get oxygenated)
4. Left atrium
5. Left ventricle
6. Body (via the aorta)

12. Blood Vessels
• Arteries: Carry oxygenated blood away from
the heart. Examples: Aorta, Carotid artery,
Femoral artery

13. Blood Vessels
• Arteries: Carry oxygenated blood away from
the heart. Examples: Aorta, Carotid artery,
Femoral artery
• Veins: Carry deoxygenated blood toward the
heart. Examples: Vena Cava, Jugular vein