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प्रश्न
What does the term “double circulation” mean?
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उत्तर
Blood flows twice in the heart before it completes one full round. The full round thus includes
pulmonary and systemic circulation. In pulmonary circulation, blood enters the lungs through
pulmonary arteries. Pulmonary veins collect the blood from the lungs and carry it back to the
left atrium.
In systemic circulation, blood from the left ventricle enters the aorta through which the blood is
sent to the body parts. From the body parts blood is collected by veins and sent back to the heart.
Therefore, the blood circulation in the human body is called double circulation.
संबंधित प्रश्न
Describe the function of the heart.
the Biological/technical term for Blood vessels carrying blood to the left atrium.
Name the following:
The valve present in between the chambers on the right side of the human heart.
What is diastole?
The table below is designed to indicate the transport of certain substances in our body. Fill in the blanks with suitable answers.
| Substance | From | To | |
| 1. | ______ | Lungs | Whole Body |
| 2. | Carbon Dioxide | ______ | ______ |
| 3. | Urea | ______ | ______ |
| 4. | Digested Carbohydrates | Intestines | ______ |
| 5. | ______ | ______ | Target Organs |
| 6. | Heat | ______ | Whole Body |
Match the following.
| Group A | Group B |
| (1) Lungs | (a) Circulation |
| (2) Stomach | (b) Respiration |
| (3) Heart | (c) Co-ordination |
| (4) Brain | (d) Digestion |
Which of the following is/are required for the production of RBCs?
The lymphatic system consists of which of the following?
Which of the following cells are produced from reticulocytes?
Ventricles have ______ walls when compared with those of auricles.
