(Unit 3) To investigate the effect of exercise on breathing/ pulse rate
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Give 2 factors other than exercise that have an effect on the circulatory system.
diet, smoking
How do you measure pulse rate, and breathing rate?
PR: counted number of pulses per min BR: counted number of breaths per min
What would happen breathing/pulse rates after exercise has stopped?
decrease
Why might you repeat the investigation (3 times)?
more accurate data
During this activity, body temperature also increased, why?
respiration increased releasing heat
Possible safety precautions for this investigation?
clear of obstacles, allow a warm-up/cool down, ensure no medical conditions
Name the protein in blood responsible for transporting oxygen.
haemoglobin
What is a pulse?
the stretching of an artery
What makes the wrist/temple/neck a suitable part of the body to detect a pulse?
artery is near the surface
What was the control of this investigation? What is the purpose of this control?
rate at rest, compare with the results of the investigation
Suggest how you might measure recovery time?
immediately after exercise count pulse (record) per minute^ measure length of time until resting is reached