ENTRANCE TEST – 2010 Multiple Questions and Answers.
Exercise Questions ::
BIOLOGY
11. | Expiration in human beings is carried out by |
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| A. | Contraction of lungs |
| B. | Contraction of intercostal membrane |
| C. | Relaxation of intercostal and diaphragm muscles |
| D. | Contraction of diaphragm muscles |
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13. | Which one of the following statements best describes the function of sinoatrial node? |
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| A. | It sends out electrical impulses to atrial muscles causing both atria to contract |
| B. | It consists of small number of diffusely oriented cardiac fibre |
| C. | It sends out electrical impulses to ventricular muscles causing both ventricles to contract |
| D. | It is present at upper end of left atrium |
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14. | The flow of lymph in lymphatic vessels is maintained by: |
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| A. | ) Heart, activity of smooth muscles and valves |
| B. | Activity of skeletal muscles, heart and breathing movements |
| C. | Breathing movements, activity of skeletal muscles and valves |
| D. | Exercise, breathing movements and hear |
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