Slide 1
1st Year Science
Slide 2
True or False?
Arteries carry blood from the heart
Arteries carry oxygenated blood
Capillaries connect arteries and veins
Capillaries have very thick walls
Veins have no valves
Capillaries have valves to prevent the backflow of blood
Veins have a large space inside
Arteries carry de-oxygenated blood
Veins carry blood towards the heart
Slide 3
The heart is a muscle that pumps blood around the body
It pumps oxygenated blood from the lungs around the body
It pumps deoxygenated blood from the body back to the lungs
Now look at the heart animation!
Slide 4
Looking at the heart…
The right side of my heart pumps blood to my lungs
The left side of my heart pumps blood to the rest of my body
The heart contains four valves to stop the backflow of blood