Biology- The Heart

Questions about the heart

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Through which main blood vessel does de-oxygenated blood return to the heart?
The vena cava.
1 of 5
What is the name of the vessel that pumps blood to the lungs?
The pulmonary artery.
2 of 5
Why is the heart seperated into two sections?
One section (the left side) contains oxygenated blood and the other (the right) contains de-oxygenated blood.
3 of 5
Why do ventricles have thicker walls?
They have to contract to pump the blood all around the body at a high pressure.
4 of 5
Why are there valves in the heart?
To prevent the back-flow of blood.
5 of 5

Other cards in this set

Card 2

Front

What is the name of the vessel that pumps blood to the lungs?

Back

The pulmonary artery.

Card 3

Front

Why is the heart seperated into two sections?

Back

Preview of the front of card 3

Card 4

Front

Why do ventricles have thicker walls?

Back

Preview of the front of card 4

Card 5

Front

Why are there valves in the heart?

Back

Preview of the front of card 5

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