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Which of the following cells are of different types, size and shapes?
a) platelets           

b) plasma             

c) WBCs

d) RBCs

c

Explanation:White blood cells are part of the body's immune system. They help the body fight infection and other diseases. Types of white blood cells are granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes (T cells and B cells).


Which of the following cells protect your body from germs and harmful things?
a) platelets           

b) plasma             

c) WBCs

d) RBCs

c

Which of the following cells make the immune system?
a) platelets           

b) plasma             

c) WBCs

d) RBCs

c

Which of the following disease attacks WBCs in the blood of patient?
a) malaria                                            

b) TB     
c) AIDS                                 

d) Dengue fever

c

Explanation:Acquired immunodeficiency syndrome (AIDS) is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV). By damaging your immune system, HIV interferes with your body's ability to fight infection and disease.



In which disease the immune system of a patient fails to fight against disease causing germs?
a) malaria            

b) TB 

c) AIDS 
d) Dengue fever

c

Blood Vessels:

There are three kinds of blood vessels: arteries, veins, and capillaries. Each of these plays a very specific role in the circulation process. Arteries carry oxygenated blood away from the heart. They're tough on the outside but they contain a smooth interior layer of epithelial cells that allows blood to flow easily.