White Blood Cells engulf, ingest then digest bacteria and viruses found in the Circulatory system, such as Listeria Monocytogenes and Streptococcus Pneumoniae.
Red Blood Cells contain a substance called Oxy-haemoglobin. Oxy-haemoglobin contains Oxygen, which then diffuses into the muscles. This substance now becomes haemoglobin, due to the diffusion of the Oxygen.
When we exercise we respire aerobically. This means using Oxygen but it gets to our muscles slowly in large masses. When we exercise and we get to the stage where we call “out of breath” we respire an-aerobically. This is called an-aerobic respiration. But this method of respiring sends Oxygen to muscles and organs rapidly, but in smaller masses.
After exercise we still breathe an-aerobically because we pay back an Oxygen debt. This process simply restores any Oxygen missing.
Variables
In this investigation, I could change: -
- The type of exercise
- Amount of exercise
- Method of taking pulse rate
- Where to take pulse rate
- How long to take pulse rate
Fair Test
To make this a fair test, I will only change the type of exercise.
Equipment
For this investigation you will require: -
- Stopwatch
- Type of exercise
Method
- Sit down.
- Take pulse rate for 30 seconds.
- Record pulse rate in a table.
- Exercise lightly for 5 minutes. (Jogging on path)
- Take pulse rate for 30 seconds.
- Record pulse rate and double it.
- Take pulse rate again for 1 minute and record in table. (Repeat for Reliability)
- Repeat 1-7 changing the type of exercise. (Jogging up steps)
- Repeat 1-7 changing the type of exercise. (Running on path)
Table
Conclusion
I found out that the amount of exercise affects the pulse rate, by increasing in order to diffuse blood to muscles and organs.
ANALYSIS
The graph shows as the time increases the pulse rate decreases.
