The diagram shows a section through a human heart - Leaving Cert Biology - Question 4 - 2008
Question 4
The diagram shows a section through a human heart.
(a) Name blood vessel A.
(b) Is the blood in A oxygenated or deoxygenated?
(c) Name the chamber of the heart la... show full transcript
Worked Solution & Example Answer:The diagram shows a section through a human heart - Leaving Cert Biology - Question 4 - 2008
Step 1
Name blood vessel A.
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Answer
Blood vessel A is the aorta.
Step 2
Is the blood in A oxygenated or deoxygenated?
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Answer
The blood in A is oxygenated.
Step 3
Name the chamber of the heart labelled B.
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Answer
The chamber of the heart labelled B is the ventricle.
Step 4
Give one reason why the wall of chamber B is thicker than the wall of chamber C.
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Answer
The wall of chamber B is thicker because it pumps blood further, maintaining blood pressure and supporting greater activity.
Step 5
What is the role of the bicuspid valve?
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Answer
The role of the bicuspid valve is to stop the back flow of blood from the atrium to the ventricle.
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