Define heart beat ? What are the different factors that affect the heart beat of a person?
What do you mean by blood pressure. Write its unit.
What is meant by systolic blood pressure? or Define systolic blood pressure.
People living in Himalayan regions have red cheeks why ?
Differentiate between pulmonary artery and pulmonary vein.
Explain the working mechanism of the heart. or In detail write about mechanism of heart.
What do you mean by pulmonary blood circulation ? illustrate with figure.
What do you mean by systemic blood circulation? Illustrate with figure
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