Circulatory system

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What does the circulatory system consist of?
heart, blood vessels, blood
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What are the four parts of the heart?
right atrium, left atrium, right ventricle, left ventricle
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How does the heart generate pressure?
By the muscle in the wall contracting
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What is a special part of the heart which acts like a flap?
Valves
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What does blood move out of the heart in?
Arteries
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What does blood move into the heart in?
Veins
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What happens first in circulation?
Blood gets pumped from the heart to the lungs and picks up oxygen
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What happens after the blood has been pumped to the lungs?
The blood is then taken back to the heart
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What happens after the blood has been taken back to heart from the lungs?
The heart pumps the blood to the intestine (where oxygen is glucoses is removed) and to the rest of the body (where oxygen is removed)
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What happens after the blood has been pumped to the rest of the body?
After the oxygen and glucose have been removed for respiration the blood is sent back to the heart and starts again
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What are the smallest blood vessels called?
Capillaries
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What do capillaries do?
They deliver blood to every cell
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What do capaillaries join up to form?
Wide blood vessels called veins
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What special feature does veins have and what do they do?
Flaps called valves act like one-way doors to stop blood flowing backwards
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How many veins enter your heart and what does each one do?
Two veins enter your heart. One brings blood back from the lungs, the other brings is from the rest of the body
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What is every cell in the body close do?
A capillary
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Capillaries are very thin. What does this property help them to do?
Capillaries are so thin that small molecules like glucose and oxygen can diffuse out to the body cells around them
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How do the red blood cells go through the capillary?
In single file
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How much oxygen does the blood have that is pumped to the lungs?
It is carrying less oxygen (deoxygenated blood)
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How much oxygen does the blood have that is goes back to the heart to be pumped around the rest of the body?
It is carrying more oxygen (oxygenated blood)
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What speed does the blood travel in veins?
Slowly
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What are arteries like?
They are thick walled, strong blood vessels.
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What speed does the blood travel in arteries?
Under pressure and moving fast
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Why is the heart called a double pump?
Because on each trip around the body, a single blood cell goes through the heart twice
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Other cards in this set

Card 2

Front

What are the four parts of the heart?

Back

right atrium, left atrium, right ventricle, left ventricle

Card 3

Front

How does the heart generate pressure?

Back

Preview of the front of card 3

Card 4

Front

What is a special part of the heart which acts like a flap?

Back

Preview of the front of card 4

Card 5

Front

What does blood move out of the heart in?

Back

Preview of the front of card 5
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