Biology - Single MCQs (Page 64)

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Q631. Thromboplastin required for blood clotting at the place of injury is released b...Q632. Thickest part of human heart is?...Q633. The sequence of cardiac cycle is?...Q634. The role of pacemaker in heart is to?...Q635. The opening of inferior vena cava into right auricle is regulated by?...Q636. The impulse generating (pacemaker) tissue located in the right atrium of the hea...Q637. The heart muscles are?...Q638. Systolic pressure is 120 mm Hg and diastolic pressure is 80 mm Hg, the pulse pre...Q639. Systolic pressure in adult human is?...Q640. Systole Is contraction of?...