Enzymes help in____.

A. Respiration
B. Digestion of food
C. Immune system
D. ReReproductio

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Lungs are situated in the_____.

A. Abdominal cavity
B. Pericardial cavity
C. Buccal cavity
D. Thoracic cavity

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Which of the following statements is correct

A. Pulmonary artery carries pure blood
B. Pulmonary artery carries impure blood
C. Pulmonary vein carries impure blood
D. None of these

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Ricketts is a disease of the____.

A. Bones
B. Tissue
C. Muscles
D. Blood

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Match the following columns

Column I Column II

A. Air-borne 1. Tetanus
B. Airborne 2. Tuberculosis
C. Contact 3. Cholera
D. Wound 4. Syphilis

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