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ENTRANCE TEST – 2009 :: Discussion
| 3. | Which of the following statement best describes the function of sinoatrial node? | |
| A. | It sends out electrical impulses to ventricles to contract. | |
| B. | It is present at upper end of the left atrium | |
| C. | It consists of small number of diffusely oriented cardiac fibers. | |
| D. | It sends out electrical impulses to atrial muscles causing both atria to contract. | |
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