Heart attack is also called . . . . . . .

The condition in which the heart is not pumping blood effectively enough to meet the needs of the body is called:

Atherosclerosis is caused due to

Given below are the abnormal conditions related to blood circulation. Name the disorders.
$(a)$ Acute chest pain due to failure of $O_{2}$ supply to heart muscles
$(b)$ Increased systolic pressure

Atherosclerosis affects which of the following?

The deposition of calcium,fat,cholesterol,and fibrous tissues in the lumen of arteries causes: