Given below are the abnormal conditions related to blood circulation. Name the disorders.

a. Acute chest pain due to failure of O2 supply to heart muscles

b. Increased systolic pressure

a. The disorder caused due to acute chest pain due to failure of O2 supply to heart muscles is known as ANGINA PECTORIS. It is caused when adequate oxygen does not reach the heart muscles leading to heart pain and discomfort.

b. Increased systolic pressure causes HYPERTENSION. It mainly occurs when the blood pressure constantly remains higher than normal which is 120/80 mm Hg.