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Pace maker is situated in heart

In the wall of right atrium
On interauricular septum
On interventricular septum
In the wall of left atrium
Additional Questions

What is true about vein?

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Systole Is contraction of

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Pacemaker of heart is

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Wall of blood capillary is formed of

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Pericardial fluid is secreted by

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Pericardial space in cockroach is regularly altered by muscles

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Pulmonary artery differs from pulmonary vein in having

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Pulmonary artery drains deoxygenated blood from

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Pulmonary trunk and aorta are attached by

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Pulmonary vein carries blood

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