Biology - Single MCQs (Page 65)

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Q641. Systematic circulation of oxygenated blood starts from?...Q642. Sympathetic nervous system?...Q643. SA node is located?...Q644. Right atrium receives blood from?...Q645. Ridges present in the ventricles are?...Q646. Rate of heart beat is reduced by?...Q647. Purkinje fibres arise from?...Q648. Purkinje fibres are connected with impulse conducting system of?...Q649. Pulse pressure is?...Q650. Pulmonary vein carries blood?...