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Question
What does the term ‘double circulation’ mean?
Solution
Double circulation means that the blood flows twice in the heart before it completes one full round-the short pulmonary (lung) circulation and the long systemic (general body) circulation.
For this reason, blood circulation in the human body is also called double circulation.
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RELATED QUESTIONS
What is the significance of double circulation?
What is meant by the term 'single circulation'?
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.
Why is the small intestine in herbivores longer than in carnivores?
Which of the following carries nutrients from the digestive tract to the liver?
Select the correct option:
Why is the double circulation of blood in human beings necessary?
Write the exact location of the following:
Hepatic portal vein
