This happens when the force of blood that pushes against the walls of arteries, is consistently high.

It happens when there is a decreased supply of blood to the heart.

This happens when the heart muscles do not get enough blood that is rich in oxygen.

This happens when the brain did not receive enough supply of oxygen.

It is the contraction of the bronchi of the lungs which cause difficulty in breathing.

It is the swelling of the lining of the bronchi due to bacterial or viral infection.

This infection results in the inflammation of the lungs, particularly its air sacs called alveoli.

This is a highly communicable disease of the lungs.

It is the abnormal and uncontrolled growth of cells in the lung tissues.