MODEL PAPER 10 — BIOLOGY STD 11 Science — Question

Hypertension is another name for high blood pressure which is the force exerted by the blood against the walls of the blood vessels. The pressure depends on the work being done by the heart and the resistance of the blood vessels.
Some of its Causative factors are:
i. Age: The risk of high blood pressure increases as a person becomes older because the blood vessels become less flexible.
ii. Ethnic background: African-American people have a higher risk of developing hypertension than other people. Hypertens also presents more severely in African-American people and is less responsive to certain medications.
iii. Obesity and being overweight: People who are overweight or have obesity are more likely to develop high blood pressure.