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प्रश्न
Given below is a diagram of a human blood smear. Study the diagram and answer the questions that follow:
- Name the components numbered ‘1’ to ‘4’.
- Mention two structural differences between the parts ‘1’ and ‘2’.
- Name the soluble protein found in part ‘4’ which forms insoluble threads during clotting of blood.
- What is the average lifespan of the component numbered ‘1’ ?
- Component numbered ‘1’ do not have certain organelles but are very efficient in their function. Explain.
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उत्तर
a)
- RBC
- Neutrophil
- Blood platelets
- Blood plasma
b)
| RBC | Neutrophil |
| Biconcave, disc-shaped | Amoeboid |
| Do not have nucleus | Have 3-5 lobbed nucleus |
c) Fibrinogen
d) 120 days
e) RBCs do not have a nucleus, endoplasmic reticulum and mitochondria. They are very efficient in carrying nutrients like glucose (which they cannot use, due to lack of mitochondria), can easily pass through the capillaries (lack of endoplasmic reticulum - endoskeleton)
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संबंधित प्रश्न
Explain Diapedesis.
When a doctor is recording your pulse, he is pressing on your wrist exactly on a
The oxygen-rich blood from the lungs comes into the ______ of the heart.
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?
Match the statements in Column A with those in Column B
| Column A | Column B | ||
| 1 | Heart | a | Movement of materials |
| 2 | Food and oxygen | b | Channels for transport in man |
| 3 | Carrier of oxygen | c | A living pump |
| 4 | Circulation | d | Materials needed by every living being |
| 5 | Arteries and veins | e | Red blood cells |
Explain the Term
Hepatic Portal System
Which of the following cells are produced from reticulocytes?
Circulation is carried out by ______ in higher animals.
Which of the following is a major part of the plasma?
______ refers to a marked decrease in the number of platelets.
