Question : Which of the following brings back deoxygenated blood from different parts of the human body to the heart?

Option 1: Veins

Option 2: Arteries

Option 3: Nerves

Option 4: Lungs

Question : The cause of heart attack is:

Option 1: bacteria

Option 2: virus

Option 3: lack of blood supply to the heart

Option 4: impairment of heart's working due to unknown reason

Question : Tumours that normally, remain confined to their original location, do not spread to other parts of the body and cause little damage are called ______ tumours.

Option 1: benign

Option 2: malignant

Option 3: active

Option 4: premalignant

Question : A blood clot is formed because of the presence of certain cells in the blood called:

Option 1: chondrocytes

Option 2: erythrocytes

Option 3: platelets

Option 4: lymphocytes

Question : Leukaemia or blood cancer is characterised by abnormal increase of the

Option 1: Red Blood Cells

Option 2: White Blood Cells

Option 3: Blood platelets

Option 4: Blood plasma