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Heart Worksheet
1. The diagram below shows an external view of the mammalian heart.

Show the positions of the following structures on the diagram.

Right atrium, left atrium, right ventricle, left ventricle, aorta, caudal vena cava,
pulmonary artery, coronary artery, cranial vena cava.






2. The diagram below shows a section…

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b) On the diagram of the heart shown above indicate the direction of blood flow through the
heart. Use red to show the pathway of oxygenrich blood and blue the pathway of
oxygenpoor blood.

3. Choose terms from the list to complete the sentences below.

atria right hand side vena…

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4. Fill in the name of the blood vessel in the table below.


Towards or
Name of blood vessel Blood? Walls?
away from heart



....................... Oxygenated Thin Towards


........................ Oxygenated Thick Away from


......................... Deoxygenated Thick Away from


......................... Deoxygenated Thin Towards

5. What is the odd one out?
a)…

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Heart Worksheet Answers
1. The diagram below shows an external view of the mammalian heart.





2. The diagram below shows a section through the heart seen from the same direction as the external
view in question 1.





3. Choose words from the list to complete the sentences below.
a) The…

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Aorta Oxygenated Thick Away from


Pulmonary artery Deoxygenated Thick Away from


Vena cava Deoxygenated Thin Towards

5. What is the odd one out?
a) Right atrium, right ventricle, pulmonary artery, caudal vena cava, aorta.
The aorta is the only structure in the list that carries oxygenated blood.
b) Left atrium,…

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