NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION

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SAN generates an action potential which stimulates both the …A… to undergo a simultaneous contraction called …B… . This increases the flow of the blood into the ventricles by about …C… percentage
Choose the correct option for A, B and C

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Correct option: A

A-atria, B-asterial systole, C-30

Option A (A-atria, B-asterial systole, C-30) is correct because the SAN stimulates both atria to undergo atrial systole, increasing blood flow into the ventricles by about 30%.

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In ABO blood grouping, person with blood group

{O^ - }

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60 \,\mathrm{~mL}

whereas the volume of blood at the end of ventricular diastole was

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. What is the cardiac output in this person? Which area allows the atria to completely empty as the ventricles fill with blood? Serum is Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups The action potential is conducted to the ventricles by AVN. Damage to AVN results in