Question
Download Solution PDFIf the radius of blood vessels of a person decreases, then his/her blood pressure will:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Increase.
Key Points
- Blood pressure is the force exerted by circulating blood on the walls of blood vessels.
- A decrease in the radius of blood vessels leads to a higher resistance to blood flow.
- According to the principle of Poiseuille's law, blood flow is inversely proportional to the fourth power of the vessel radius.
- This increased resistance results in the heart working harder to pump blood, thereby increasing blood pressure.
- Narrowing of blood vessels can be caused by various factors such as atherosclerosis, stress, and certain medical conditions.
Additional Information
- Blood Pressure
- Measured using a sphygmomanometer.
- Expressed in millimeters of mercury (mmHg).
- Normal blood pressure is around 120/80 mmHg.
- Hypertension
- Condition of persistently high blood pressure.
- Can lead to heart disease, stroke, and kidney failure.
- Managed through lifestyle changes and medication.
- Atherosclerosis
- Build-up of fats, cholesterol, and other substances in and on artery walls.
- Can restrict blood flow and lead to blood vessel narrowing.
- Preventive measures include a healthy diet, regular exercise, and avoiding smoking.
- Cardiovascular Health
- Regular monitoring of blood pressure is crucial.
- Maintaining a healthy weight and diet reduces risk.
- Exercise and stress management are key factors.
Last updated on Jun 16, 2025
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