Answer:
(a) Hypertension The
high blood pressure can harm heart, brain kidneys and eyes. High blood pressure
is most common disease affecting the heart and blood vessels, Blood pressure is
considered normal at 120/80. When it goes beyond 140 mm Hg and 90 mm Hg it is
called hypertension or high blood pressure.
Causes of
Hypertension
(i) Blockage
in the coronary heart vessels.
(ii) Tobacco
smoking speeds up heart rate. It constrict blood vessels and raises blood
pressure.
(b) Coronary Artery
Disease (CAD) It is caused due to the deposition of fatty substances on the
arterial wall causing atherosclerotic plaques. The lumen of artery decreases, thus
obstructing the blood flow and sometimes completely blocks the artery resulting
into thus, heart attack.
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