The circulatory system transports nutrients, oxygen, water and removes wastes such as carbon dioxide throughout the body. It consists of arteries that carry oxygenated blood away from the heart with thick walls and high pressure, and veins that carry deoxygenated blood towards the heart with thinner walls and valves. The heart is located in the thoracic cavity slightly left of center and has four chambers - right and left auricles and ventricles - that pump blood through the pulmonary artery to the lungs and pulmonary veins back to the heart.

1. The Circulatory System

2.  Transport the materials through out the body.
 Transports :
1. Nutrients
2. Oxygen
3. Water
Carries away : Wastes CARBON DIOXIDE that
the body cells produces

5. ARTERIES
1. Supplies oxygenated
blood.
2. Away from the heart.
3. Blood flow with high
pressure
4. Thick wall
5. No valves
6. Present deep inside
the skin
VEINS
1. Supplies
deoxygenated blood.
2. Towards the heart.
3. Blood flow with Low
pressure
4. Thin wall
5. Have valves
6. Present near by the
skin

7.  Pulmonary artery : Carries Deoxygenated
blood towards the heart - to the lungs to get
purify.
 Pulmonary veins : Carries oxygenated blood to
the heart from the lungs.

16. POSITION :
• Vital organ
• Pumps the
blood through
out the body
• Thoracic cavity
• Slightly to the
left side of the
chest

21. Right
Auricle
Left
Auricle

22. Right
ventricle
Left
ventricle

25. Inferior vena cava
brings
de-oxygenated
blood from
lower parts of the
body to the
heart.

30. 1. Pulmonary
vein
2. Aorta
3. Left auricle
4. Left ventricle
5. Right ventricle
6. Right auricle