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प्रश्न
Describe the functions of the: Blood vessels
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उत्तर
Blood vessels are a necessaiy part of the body’s circulatory system. The blood vessels carry blood throughout the body.
Three types of blood vessels are :
- Arteries: They carry oxygenated blood from the heart to all parts of the body.
- Veins: They carry deoxygenated blood from the body cells to the heart.
- Capillaries: They form the connection between the arteries and the veins where exchange of substances takes place
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संबंधित प्रश्न
Name the following:
The blood vessel which supplies blood to the liver.
Blood in the pulmonary artery or pulmonary vein (Which one contains less oxyhaemoglobin?)
Given below is a diagram of a human blood smear.
Study the diagram and answer the questions that follow:
a) Name the components numbered ‘1’ to ‘4’
b) Mention two structural differences between the parts ‘1’ and ‘2’.
c) Name the soluble protein found in part ‘4’ which forms insoluble threads during clotting of blood.
d) What is the average lifespan of the component numbered ‘1’ ?
e) Component numbered ‘1’ do not have certain organelles but are very efficient in their function. Explain
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 type 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?
What are the average values of blood pressure in a normal adult human?
Find out my partner.
| Group ‘A’ | Group ‘B’ |
| 1. Heart beats | a. 350 ml |
| 2. RBC | b. 7.4 |
| 3. WBC | c. 37°C |
| 4. Blood donation | d. 72 |
| 5. Normal body temperature | e. 50-60 lakh/mm3 |
| 6. pH of oxygenated blood | f. 5000-6000 per mm3 |
Why does the left ventricle possess a thicker wall than the right ventricle?
You can see some blood vessels on the outside of the hands specially in older people. Are those veins or arteries? How can you confirm your answer?
What are seen as greenish blue lines in our hands and legs?
______ prevent blood clotting.
