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प्रश्न
Why is the circulation in man referred to as double circulation?
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उत्तर
In humans, blood passes twice through the heart to supply once to the body.
Double circulation involves:
(i) Systemic circulation,
(ii) Pulmonary circulation.
(i) Systemic circulation: In the systemic circulation, from the left ventricle blood is pumped into the aorta and to various parts of the body.
(ii) Pulmonary circulation: In pulmonary circulation, from the right ventricle deoxygenated blood is pumped into the pulmonary artery which carries blood to the lungs for oxygenation.
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संबंधित प्रश्न
What is the significance of double circulation?
Blood in the human body circulates twice for making one complete round through the body. Explain.
Blood in the human body circulates twice for making one complete round through the body. Explain.
The diagram represents the ‘closed system’ or ‘double circulation’ of blood in mammals.
Justify the above statement.
State two structural and two functional differences between the arteries and veins.
State the changes in the composition of blood as it passes through the following organs:
(a) Lungs (b) Gut (c) Liver (d) Kidneys.
In which of the following organisms double circulation occurs?
Choose the event that does not occur in photosynthesis
In which, blood circulation starts and ends in capillaries?
Why is the double circulation of blood in human beings necessary?
From where to where do the following blood vessel carry blood?
Hepatic vein
Write the exact location of the following:
Hepatic portal vein
