Hardening of the arterial wall is called . . . . . . .

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 refers to the ailment of

The thickening and hardening of the walls of arteries is called:

Dropsy means

Pain in the heart muscle is known as........