In which one of the following is extra blood stored and is released when shortage occurs?
READ MORE +Circulatory System MCQs
The nodal musculature of the heart is auto excitable. True or false?
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Which of these is known as the pacemaker of the heart?
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How many action potentials can the SAN generate per minute?
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Which of these structures is close to the AVN?
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How many times does the heart beat in one minute?
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What is the opening between the right auricle and the right ventricle called?
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Which of these organs are situated in the thoracic cavity?
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What is the location of the SAN?
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What is the opening between the left atrium and the left ventricle known as?
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What is the atrio-ventricular septum made of?
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Which of these is not included in the vascular system?
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