1. Lesson Starter What 4 types of cells make up blood?
Which type of cell carries oxygen around the blood- what special features does it have to help it?
What is the heart made of?
What is the name of the 4 chambers in the heart?

2. Left and right ventricle
Part of the heart
Function
Left and Right Atrium
Collect blood
Left and right ventricle
Pump blood
Vena Cava
Carries deoxygenated blood to the heart
Pulmonary Artery
Carries blood from right ventricle to lungs
Aorta
The main artery of the body, supplying oxygenated blood to the circulatory system
Pulmonary Vein
Receive oxygenated blood from the lungs
Valves
Prevent backflow of blood

3. Learning Intention
To discuss and be able to identify the different parts of the heart
To being to learn about the pathway of blood through the heart
To be able to describe the different types of blood vessels in the circulatory system

4. Try to answer the questions on the board as you watch the video
Try to answer the questions on the board as you watch the video

5. One way system One way system- valves prevent backflow
Between beats- heart relaxed and fills with blood
Atria contract- blood forced to ventricles
Ventricles contract- force blood out of heart

6. Circulation of blood through the heart
Blood high in oxygen is called oxygenated blood
Oxygenated blood returns from the lungs…
in the pulmonary vein
enters the left atrium
into the left ventricle
out through the aorta
to the body

7. enters the right atrium into the right ventricle
Blood low in oxygen is called deoxygenated blood.
Deoxygenated blood returns from the body tissues…
in the vena cava
enters the right atrium
into the right ventricle
out through the pulmonary artery
to the lungs where it picks up oxygen

8. Blood flow: stick w/s in jotter
Colour the blood coming from the capillaries in the lungs red (A), this vessel takes blood to the heart
Colour the left side of the heart red (B)
Look for the blood vessel taking blood out of the left side of the heart. Colour it red (C)
Colour the blood that moves away from the capillaries in other parts of the body purple (D)
Colour the right side of the heart purple (E)
Colour the blood vessel that takes blood away from the right hand side of the heart purple (F)

10. Arteries
Carry Blood AWAY from the heart (always oxygenated apart from the pulmonary artery which goes to the lungs)
Thick elastic walls, small passageways- withstand high pressure
Pulsate
Deep in body- protect them

11. Veins
Carry blood BACK to the heart (always de-oxygenated apart from the pulmonary vein which goes from the lungs to the heart)
Thin walled
Large internal passageways, Low pressure, – so low it needs valves
One way system- valves

12. Capillaries Tiny Walls only one cell thick
Permeable (unlike arteries and valves)
Diffusion of useful substances eg gas exchange

13. Blood vessels and circulation (copy)
Blood is carried round the body in blood vessels.
There are 3 major types of blood vessel: Arteries, Capillaries, and Veins.
Blood is carried AWAY from the heart in the ARTERIES at HIGH PRESSURE and is carried back to the heart in the VEINS at LOW PRESSURE.
Veins have VALVES to prevent backflow of blood- ensuring that the blood is circulated one way.

14. Move to the correct corner
Carries blood away from the heart
Is permeable
Carries blood back to the heart
Has valves
Carries blood at high pressure
Is only one cell thick
Deep in the body to protect them

15. Choose a picture and explain how it relates to what you have learnt today