Class XI

Blood pressure is expressed as the ratio of systolic over diastolic pressure. The difference between systolic and diastolic pressure is called pulse pressure. What will be its value for a normal healthy adult?
  1. 70 mm Hg
  2. 30 mm Hg
  3. 50 mm Hg
  4. 40 mm Hg
The left atrium receives deoxygenated blood in :
  1. Moneky
  2. pigeons
  3. humans
  4. lizards
Which of the following statements doesn’t hold true for blood clotting cascade? i. Ruptured platelets release thromboplastin. ii. Prothrombinis converted into thrombin in the presence of vitamin K and Na+ions. iii. Fibrinogen is converted into fibrin through enzymatic action of thrombin in the presence of Ca++ions iv. Fibrin makes clot via process of polymerisation.
  1. all statements are wrong
  2. only statement ii) and iii) are wrong
  3. only statement i) and iv) are wrong
  4. only statement iv) is wrong
The cardiovascular centre is located in :
  1. Pons
  2. Medulla oblongata
  3. Cerebrum
  4. Cerebellum
Match the following: column A a) Atherosclerosis b) Haemorrhage c) Heparin d) Polycythemia column B i) Hypotension ii) High blood pressure iii) Abnormal increase in RBC count iv) Anticoagulant
  1. a)-i, b)-iii, c)-iv, d)-ii
  2. a)-iv, b)-i, c)-ii, d)-iii
  3. a)-iii, b)-iv, c)-ii, d)-i
  4. a)-ii, b)-i, c)-iv, d)-iii
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