A. Antitoxin B. Adrenalin C. Histamine D. Epinephrine
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A. Narrow lumen B. Valves to control direction of flow of blood towards the heart C. Strong muscular walls D. Valves to control direction of flow of blood opposite to the heart
A. Heart block B. Heart attack C. Coronary thrombosis D. All the three
A. A B. C C. E D. K
A. Alkaline B. Acidic C. Neutral D. None
A. Hepatic portal system B. Renal portal system C. Three venae cavae D. Hepatic vein
A. A B. B C. AB D. O
A. All groups B. ‘A’ or ‘B’ C. ‘AB’ only D. ‘O’ only
A. A B. B C. AB D. O
A. A B. B C. AB D. O