Look at the diagram of the human circulatory system - OCR Gateway - GCSE Biology - Question 16 - 2018 - Paper 1
Question 16
Look at the diagram of the human circulatory system.
(a)
(i) Write the letter X on the diagram to show the position of the left ventricle.
(ii) Complete the seque... show full transcript
Worked Solution & Example Answer:Look at the diagram of the human circulatory system - OCR Gateway - GCSE Biology - Question 16 - 2018 - Paper 1
Step 1
Write the letter X on the diagram to show the position of the left ventricle.
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Answer
The left ventricle is located on the lower left side of the heart diagram. Mark the letter X within the appropriate shaded area to indicate its position.
Step 2
Complete the sequence to show the flow of blood through the circulatory system.
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Answer
Left side of heart
Rest of body
Veins
Right side of heart
Artery
Vein
Left side of heart
Step 3
What is the name of this type of circulation?
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Answer
The type of circulation where blood travels through the heart twice in one complete circuit is called 'double circulation.'
Step 4
Suggest two advantages of blood travelling through the heart twice in each complete circuit of the body.
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Increases the pressure of the blood, allowing it to be pumped more effectively to different parts of the body.
Ensures that oxygenated and deoxygenated blood are kept separate, maximizing the efficiency of oxygen transport.
Step 5
How is the thickness of the heart wall on the left side different to the right side?
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Answer
The heart wall on the left side is thicker than on the right side. This is because the left side needs to pump blood at a higher pressure to the rest of the body, whereas the right side only pumps blood to the lungs.
