Answer the following questions in relation to the human pulse - Leaving Cert Biology - Question 8 - 2016
Question 8
Answer the following questions in relation to the human pulse.
(i) What is the pulse?
(ii) What makes the wrist (or temple, or neck) a suitable part of the body to... show full transcript
Worked Solution & Example Answer:Answer the following questions in relation to the human pulse - Leaving Cert Biology - Question 8 - 2016
Step 1
What is the pulse?
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Answer
The pulse is the rhythmic stretching (or expanding or vibrating) of an artery as blood is pumped through it. This occurs due to the heart's contractions, creating pressure waves that can be felt in various locations of the body.
Step 2
What makes the wrist (or temple, or neck) a suitable part of the body to detect a pulse?
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The wrist, temple, and neck are suitable places to detect a pulse because the arteries in these regions are positioned close to the surface of the skin. This makes them easily palpable during the heartbeat.
Step 3
What was the control in this investigation?
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The control in this investigation was the measurement of the resting heart rate or breathing rate before exercise. This serves as a baseline to compare against the rates after exercise.
Step 4
What is the purpose of this control?
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The purpose of this control is to ensure that any changes in heart rate or breathing rate observed during the investigation can be accurately attributed to the effects of exercise rather than other factors.
Step 5
Axes labels
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x-axis: ‘Duration of Exercise’ or ‘Time’ (in minutes)
y-axis: ‘Rate’ (bpm or breaths per minute)
Step 6
Draw two curves or plots
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Curve A (for the athletic woman) would show a less significant increase in heart rate following exercise, whereas Curve B (for the overweight woman) would show a steeper increase in heart rate, reflecting different fitness levels.
Step 7
Suggest how you might measure recovery time.
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Recovery time can be measured by immediately counting the pulse or breathing rate right after exercise, then continuing to measure the pulse at regular intervals until it returns to the baseline resting rate. This method allows for a precise understanding of how long it takes for the body to recuperate post-exercise.
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