01. What is the pH of normal blood ?

a. 5.3 - 6.4
b. 6.3 - 7.3
c. 7.3 - 7.4
d. 7.0 - 8.0

02. What is normal clotting time ?

a. 5 to 8 minutes
b. 4 to 7 minutes
c. 3 to 6 minutes
d. 2 to 5 minutes

03. Newton is the unit of

a. Power
b. Energy
c. Heat
d. Force

04. Which vitamin serves to maintain the plasma prothrombin level and thus the normal coagulability of blood ?

a. Vitamin C
b. Vitamin K
c. Vitamin D
d. Vitamin A

05. Who discovered circulation of blood ?

a. William Harvey
b. Alexander Fleming
c. Keith
d. Flack

06. The color of the blood is due to the presence of the nitrogenous substance, called hemoglobin, in the red corpuscles. This substance contains a considerable proportion of metal, and has the power of combining with oxygen, Name the metal

a. Sodium
b. Potassium
c. Iron
d. Zinc

07. The heart is a hollow muscular organ which by its contraction, forces the blood through the whole system of blood-vessels. How many cavities are present in a human heart ?

a. Two
b. Three
c. Four
d. Five

08. The frequency of the heart beating varies considerably with the age, activity and various other circumstances. What isthe average rate for an adult ?

a. 70 to 60 per minute
b. 80 to 70 per minute
c. 90 to 80 per minute
d. None of above

09. The main phases of cardiac cycle are auricular systole ventricular and general diastole. What is the normal duration of cardiac cycles ?

a. 0.9 sec
b. 0.8 sec
c. 0.7 sec
d. 0.6 sec

10. Blood pressurre is a literal pressure exerted by blood on the vessel walls during its flow. Who discovered the measurement of blood pressure in 1733 ?

a. R. Stephen Hales
b. William Harvey
c. Haldene
d. William Stocks


Answers :

01. C , 02. B , 03. D , 04. B , 05. A
06. C , 07. C , 08. B , 09. B , 10. A

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