Circulation
STARTER –
wordsearch of key words
Circulation
Objective
Be able to explain how the heart pumps blood
around the body
Outcomes
Level 4 – Put the labels in the correct place to
describe how oxygenated and deoxygenated blood
moves around the body
Level 5 – Explain how and why pulse rate changes
when you exercise/sleep using key words to do with
respiration.
CIRCULATION
cir·cu·la·tion
Look at the word CIRCULATION
What does the first part of the word
sound like?
CIRC…….
CIRCLE
CIRCULAR
CIRCULATE
Arteries
•Have thick walls
•Carry oxygenated
(red) blood away
from the heart to the
body
•Blood moves at
high pressure
Veins
•Have thin walls
•Carry
deoxygenated
(blue) blood to the
heart from the body
Capillary
•Have thin wallls
•Walls are one cell
thick
•Subtances are able
to pass in and out of
the blood
THIN CELL WALL
BODY CELLS
RED BLOOD CELLS
lungs
The dissolved food and
oxygen needed for
respiration are carried
around the body by the
circulation system.
The circulation system
includes the blood, blood
vessels, the heart and
the lungs.
body’s
cells
Which part of the circulation
system carries dissolved
food and oxygen to the
body’s cells?
Oxygenated blood
travels from the
heart to the body
Blood travels from
the heart to the
lungs
Oxygenated blood
travels back to the
heart
Blood picks up
oxygen from the
lungs and gives out
carbon dioxide
DEOXYGENATED
blood travels from the
body to the heart
Body cells use
oxygen and give
blood CARBON
DIOXIDE
lungs
body’s
cells
2. Blood picks up
oxygen from the
lungs and gives out
carbon dioxide
1. Blood travels
from the heart to
the lungs
lungs
6. DEOXYGENATED
blood travels from the
body to the heart
5. Body cells use
oxygen and give
blood CARBON
DIOXIDE
3. Oxygenated
blood travels back
to the heart
4. Oxygenated
blood travels from
the heart to the
body
body’s
cells
Blood
The blood carries oxygen and dissolved food to all the body’s
cells so that respiration can take place.
useful
substances
waste
products
THIN CELL WALL
BODY CELLS
RED BLOOD CELLS
Your beating heart
The heart is made of very special
muscle called cardiac muscle.
This is because it has to keep
beating for the whole of a
person’s life!
If you tried to do the same action
repeatedly (like the heart does),
your muscles would get tired and
after a while stop working.
For example, if you keep clenching and unclenching your
hand, it will get tired and may even start to get cramp.
Why is it important for respiration that the heart keeps
beating?
EXERCISE
Stand up and count pulse for 1 min.
When I say go…..do star jumps PROPERLY for 1
minute
When I say stop – stand still again and count pulse for
1 minute
EXERCISE
The body needs to release more energy:
 so oxygen and sugar (glucose) need to reach
muscle cells quickly;
 so blood is pumped around the body faster;
 so the pulse is faster.
Different types of
activity
What happens to the pulse rate
whilst someone is running and
why?
What happens to the pulse rate
whilst someone is sleeping?
Circulation
plenary –
Wordframe about circulatory
system