13. (a) Heart disease is a major problem in Ireland - Leaving Cert Biology - Question 13 - 2015
Question 13
13. (a) Heart disease is a major problem in Ireland. State two ways to keep your heart healthy.
(i) Why is the muscle of the left side of the heart thicker than the ... show full transcript
Worked Solution & Example Answer:13. (a) Heart disease is a major problem in Ireland - Leaving Cert Biology - Question 13 - 2015
Step 1
State two ways to keep your heart healthy.
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Answer
Engage in regular exercise to strengthen the heart and improve circulation.
Maintain a balanced diet to support heart health, such as reducing saturated fats and increasing fruits and vegetables.
Step 2
Why is the muscle of the left side of the heart thicker than the muscle of the right side?
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Answer
The muscle of the left side of the heart is thicker because it pumps blood to the entire body, which requires more force compared to the right side, which only pumps blood to the lungs.
Step 3
Name the parts labelled A, B and C.
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Answer
A = Aorta
B = Septum
C = Right atrium
Step 4
To which organs does blood vessel E carry blood?
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Blood vessel E carries blood to the lungs.
Step 5
Is the blood in blood vessel D oxygenated or deoxygenated?
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The blood in blood vessel D is oxygenated.
Step 6
Name the arteries that supply the muscle in the heart wall with blood.
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The arteries that supply the heart muscle with blood are the coronary arteries.
Step 7
In which labelled part is the pacemaker located?
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The pacemaker is located in part C (Right atrium).
Step 8
What is the average number of heartbeats per minute in a resting adult?
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The average number of heartbeats per minute in a resting adult is approximately 72 beats per minute.
Step 9
What causes the sound of the heartbeat?
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The sound of the heartbeat is caused by the closing of the heart valves.
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