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प्रश्न
What is meant by the term ‘Double circulation’?
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उत्तर
Double circulation is the type of blood circulation in which blood passes through the heart twice during one complete circulation. It consists of pulmonary circulation (heart → lungs → heart) and systemic circulation (heart → body → heart). Therefore, blood circulation in humans is called double circulation.
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संबंधित प्रश्न
Describe double circulation in human beings.
What is the significance of double circulation?
Name the two types of transport systems in the human beings.
Put a tick mark (✓) against the correct alternative in the following statement:
Sphygmomanometer measures
- Pulse rate
- Heart beat
- Blood pressure
- Brain activity
Blood in the human body circulates twice for making one complete round through the body. Explain.
What is the difference between pulmonary circulation and systemic 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
State the Location: Hepatic portal vein
Why is the separation of the right side and the left side of the heart useful? How does it help birds and mammals?
Give scientific reason.
Closed circulation is more efficient than open circulation.
Write a note on closed circulation.
Choose the odd one out from the following terms and name the category to which the others belong:
From where to where do the following blood vessel carry blood?
Posterior vena cava
From where to where do the following blood vessel carry blood?
Hepatic portal vein
The blood vessel which carries blood from the stomach and intestine to the liver:
Distinguish between the following pair on the basis of words indicated in the bracket ( ):
Pulmonary and Systemic circulation (Kind of blood)
Write important role/roles of the following:
Hepatic portal vein
Write the exact location of the following:
Hepatic portal vein
