Define

(i) Leukemia

(ii) Angina pectoris

(iii) Hypertension

Leukemia:

1. Leukemia is said to be the cancer of the blood cells or the bone marrow.
2. An abundant increase in the number of White Blood Corpuscles (WBCs)/ leucocytes in the bone marrow or the blood is known as leukemia.
3. But the cancer cells (additional cells grown abnormally) do not provide immunity, that is they don't fight pathogens.
4. It is classified as acute and chronic leukemia.

Angina pectoris:

1. The chest pain due to any coronary heart disease is medically termed as angina pectoris.
2. It is a stage when the cardiac muscle does not get adequate blood and oxygen to function properly.
3. This happens because the artery supplying blood to the heart gets narrower.
4. Angina pectoris is considered as a symptom of coronary heart disease.

Hypertension:

1. The high blood pressure is termed as hypertension or HBP.
2. The cause of hypertension is when the arterial walls of heart experience a long term force of blood.
3. It is a common condition in most people.
4. Sometimes, the hypertension may lead to heart diseases.