Open blood vascular system is found in
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Open blood vascular system is found in
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Renal portal system is absent in
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Chordae tendinae occur in
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Pulmonary vein carries
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Vein differs from artery in having
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Sympathetic nerve increases heart pain due to release of acid alkaline inhibition of
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Vagus nerve on stimulation will cause heart rate to
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Normal blood pressure in an adult human being is
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In which animal haemoglobin is dissolved
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Heart beat initiates from
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From which one of the following chambers of human heart is the oxygenated blood pumped into aorta?
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What is instrument for measuring blood pressure called?
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