NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION

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All are correct for contractile tissue present in heart except

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Correct option: C

When one cell receives a signal to contract, its neighbours cell will also need signal to contract

Option C (When one cell receives a signal to contract, its neighbours cell will also need signal to contract) is correct because cardiac muscle cells are connected by gap junctions within intercalated discs, allowing for rapid spread of electrical signals and coordinated contraction without each cell needing an independent signal.

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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

140 \,\mathrm{~mL}

. 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