Page 15 - 新思维科学学生用书6 样章

1 The human body

Circulatory systems of other animals

Many vertebrates have a similar circulatory system to ours.
The pictures show the circulatory systems of a fish, a frog and a bird.

Fish Frog Bird
gill capillaries lung and skin capillaries lung capillaries

artery artery vein carrying blood
artery from the lungs

heart artery carrying blood
vein vein heart vein heart from the heart to the
rest of the body

body capillaries body capillaries body capillaries

Activity 1

Compare circulatory systems of some vertebrates

Work with a partner. Look at the drawings of the circulatory systems of
different vertebrate animals, then discuss the questions.

1 Which parts of the animal circulatory systems are the same as the
human circulatory system?

2 How are the animal circulatory systems different to the human

circulatory system? Explain this to a partner.

How am I doing?

Answer ‘well’, ‘okay’ or ‘I need help’ to each of the questions below.
How well can I:

• identify the parts of the circulatory system in humans and other vertebrates?
• explain how the animal circulatory systems are different to the human

circulatory system?

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