Lesson 10 - Circulatory System III

Question 1

Coronary Artery Disease

Answer 1

Arteriosclerosis: the loss of elasticity and
hardening of the arteries

Causes:
- Hypertension
- Age
- High Cholesterol

Fat, cholesterol, calcium, and other materials
that are normally present in the blood can accumulate inside the arteries to form plaque

Question 2

Heart Attack

Answer 2

Myocardial infarction: the death of
cardiac muscle tissue due to oxygen
deprivation

If this plaque and rigidity cause a rupture,
the risk is that the forming blood clot can
be dislodged and block the flow of blood
to some of the heart muscle cells.

If blood flow is not restored within 20 min
to 40 min, those muscle cells begin to die.

Question 3

Heart Attack Treatment

Answer 3

Lifestyle Changes and Medication:
- Regular exercise, a healthier diet, and quitting smoking can reduce plaque buildup.
- Medication to control risk factors (e.g.
hypertension)

Angioplasty: a procedure where a small
balloon is used to widen a narrowed artery.
A stent may be placed to keep the artery
open.