2. The heart
It is a muscular organ located in the chest
It is divided into 2 parts
It has got 4 chambers: 2 atria & 2 ventricles
It has 2 movements:
Systole
Diastole
5. The Heart
This is a vein. It brings These are arteries.
blood from the body, They carry blood away
except the lungs. from the heart.
2 atria
Coronary arteries,
the hearts own
2 ventricles blood supply
The heart has four chambers
6. Circulation
Blood follows 2 routes:
Pulmonary circulation: between the heart and lungs.
Blood with carbon dioxide comes out of the right
ventricle through the pulmonary artery.
In the alveoli blood leaves carbon dioxide and picks up
oxygen.
Blood goes to the left atrium through the pulmonary veins.
7. Circulation
Systemic Circulation:
Between the heart and the rest of the body
Blood with oxygen leaves the left ventricle through the
aorta
Blood distributes oxygen and takes carbon dioxide
It returns to the right atrium through the vena cava
8. How does this system work?
pulmonary vein lungs pulmonary artery
head & arms
aorta
main
vein
Right Left
liver
digestive system
kidneys
legs
9. Our circulatory system is a double circulatory system.
This means it has two parts parts.
Lungs
the right side of the the left side of the
system system
deals with deals with
deoxygenated oxygenated blood.
blood.
Body cells