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प्रश्न
Given below is a highly schematic diagram of the human blood circulatory system.
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- Which part (state the number) represents the heart? Give reason in support of your answer.
- Which numbers represent the following, respectively?
Aorta Superior vena cava Hepatic portal vein Renal Vein Pulmonary artery Stomach
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उत्तर
- Number 3 The diagram shows the heart by showing the flow of blood from the same number and ending in the second section from all sides, representing both the supplier and collecting vessel.
- Aorta - 5
Hepatic portal vein - 7
Pulmonary artery - 1
Superior vena cava - 9
Renal Vein - 8
Stomach - 10
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संबंधित प्रश्न
The valve which prevents back flow of blood in the veins and lymph vessels ______.
Give reason, why a matured mammalian erythrocyte lacks nucleus and mitochondria?
Differentiate between members of the following pairs with reference to the aspect asked within bracket:
artery and vein (type of blood primarily flowing through)
Why does the left ventricle possess a thicker wall than the right ventricle?
Choose the correct answer:
English physician who discovered blood circulation was ___________
Fill in the blanks with suitable words given below:
The oxygen-rich blood is pumped into different parts of the body through ______.
Given alongside is a diagram of human heart showing its internal structures. Label the parts marked 1 to 6, and answer the following questions.

- Which types of blood is carried by the blood vessel marked 2?
- Name the main artery which takes the blood from heart to different parts of the body?
- Which chamber of the heart receives deoxygenated blood from the body?
- Which chamber of the heart receives oxygenated blood from the lungs?
Define the Veins.
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 |
Respiration takes place because of its up and down movement.

