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Science Year 5 Practice 2 Humans

C What is happening in the human blood circulatory system? Fill in the blanks with the words
given.
blood rich in oxygen blood rich in carbon dioxide lungs exhale

1. When we inhale, oxygen enters the and is absorbed
into the blood vessels.
2. This blood is known as . This blood contains more
oxygen and the heart pumps this blood rich in oxygen to the whole body.
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3. After the body uses up the oxygen, carbon dioxide is produced and is absorbed into the
blood vessels. This blood is known as .

4. The heart pumps this blood rich in carbon dioxide to the lungs. The lungs remove carbon
dioxide when we .

D State the importance of blood circulatory system based on the diagrams below.

I am bringing oxygen,
nutrients and water for you.

Thank you.

1.

Let us remove all these
waste products

2.

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02 Practice Go Science Yr5.indd 12 29/09/2021 9:17 AM