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प्रश्न
Why is the circulation in man referred to as double circulation?
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 meant by the term 'Double circulation'?
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.
Explain the Term
Double Circulation
In which of the following organisms double circulation occurs?
In the given diagram, 'X' indicates ______
In double circulatory system, the function of veins is to carry ______.
Why is the separation of the right side and the left side of the heart useful? How does it help birds and mammals?
Oxygenated blood to the liver is supplied by ______.
From where to where do the following blood vessel carry blood?
Hepatic vein
Name these:
Two phases of circulation of blood in human body
