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प्रश्न
Mention the phase of heart beat in which both the atrio-ventricular valves are closed.
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उत्तर
Ventricular systole.
संबंधित प्रश्न
State the functions of blood in our body.
Name the following:
The kind of blood cells which can squeeze out through the walls of one category of blood vessels.
Give reason for the following:
The walls of the left ventricle are thicker than the walls of all other chambers.
Find the odd one out.
Why is a person having blood group AB called universal recipient and a person with blood group O called a universal donor?
What are seen as greenish blue lines in our hands and legs?
Differentiate between:
Open circulatory system and Closed circulatory system.
Describe how the exchange of oxygen and carbon dioxide gases takes place in the lungs.
Analogy
Lungs: Respiratory system:: _______: Circulatory system.
Identify the normal haemoglobin count in human females.
