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ENTRANCE TEST – 2010 :: Discussion
| 13. | Which one of the following statements best describes the function of sinoatrial node? | |
| 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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