The Heart
Science: KS3, topic 1.6.29
The Heart
The heart pumps blood around the body. The heart's work ensures that cells have the oxygen needed for respiration.
The heart
- The heart is a muscle.
- The heart pumps the newly oxygenated blood around the body.
- The heart pumps deoxygenated blood back to the lungs.
- Humans have one heart that is around the size of a person's fist.
- The heart is located in the middle left of your chest.
Unusual animal hearts
- Cuttlefish and octopuses have three hearts.
- These creatures have so many hearts to ensure that blood is pumped around their complex bodies.
- Earthworms do not have hearts.
Four chambers of the human heart
- Left atrium
- Where oxygenated blood comes from the lungs.
- Left ventricle
- Pumps oxygenated blood around the body.
- Right atrium
- Where the deoxygenated blood enters the heart from body.
- Right ventricle
- Pumps deoxygenated blood to the lungs.
Test yourself on The Heart
Which chamber of the heart pumps oxygenated blood around the body?
Where in the chest is the human heart located?
Select the true statement in each pair
Why might cuttlefish and octopuses need three hearts instead of one?
Name the two chambers of the heart that oxygenated blood passes through.