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, which can be felt as it corresponds with the heartbeat.
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 (or temple, or neck) is suitable for detecting a pulse because arteries are located near the surface in these areas, allowing easy palpation.
Step 3
What was the control in this investigation?
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The control in this investigation was the rate measured at rest, which serves as a baseline for comparison.
Step 4
What is the purpose of this control?
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The purpose of the control is to compare the results of the experiment with a standard baseline to determine the effect of exercise.
Step 5
Appropriately label each of the axes below.
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For the axes:
x-axis: 'duration of exercise' or 'time' or 'level of exercise'
y-axis: 'rate'
Step 6
Draw two curves or plots to summarise the most likely results of your investigation, clearly labelling which curve relates to which individual.
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Curve A would represent the fit athlete (A), showing a gradual increase in rate followed by a quicker return to baseline. Curve B would represent the overweight individual (B), showing a sharper increase in rate and a slower return to baseline.
Step 7
Suggest how you might measure recovery time.
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Answer
Recovery time can be measured by counting the pulse or breathing rate immediately after exercise and then measuring the time until the resting rate is reached.
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