Science // Biology // B1 // Blood Pressure //
- Created by: ameburrell9
- Created on: 10-11-14 17:18
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- Blood pressure
- Measuring blood pressure:
- It is measured in millimetres of mercury (mmHg).
- Systolic pressure is the higher the measurement when the heart beats, pushing blood through the arteries.
- Diastolic pressure is the lower measurement when the heart rests between beats
- High and low blood pressure.
- There are many factors which can increase blood pressure.
- Smoking.
- smoking increases blood pressure by raising the heart rate. Nicotine itself increases the heart rate and carbon monoxide reduces the oxygen-carrying capacity of the blood. It combines with haemoglobin in red blood cells, preventing oxygen combining with the haemoglobin.
- This causes an increase in hear rate to compensate for the reduced amount of oxygen carried in the blood.
- Being overweight.
- Drinking a lot of alcohol.
- Stress.
- Smoking.
- A balanced diet and regular exercise can reduce high blood pressure.
- Problems high blood pressure can create:
- Kidney damage.
- Burst blood vessels.
- Damage to the brain including strokes.
- Problems low blood pressure can create:
- Dizziness
- Fainting
- Poor blood circulation
- There are many factors which can increase blood pressure.
- Measuring blood pressure:
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