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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
Aqueous humour, Vitreous humour, lris, Central canal
Given below is certain structure, write the term for the functional activity.
Erythrocytes and …………………………………
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:
Tricuspid and bicuspid values (location)
Find the odd one out.
Given below is the simplified pathway of the circulatory system:
(i) Name the blood vessels marked 1 to 8.
(ii) Name the chamber of the heart which:
(a) Receives blood from ‘1’.
(b) Pumps blood into blood vessel ‘8’.
(iii) Mention two structural differences between blood vessels ‘7’ and ‘2’.
Given below is a schematic representation of the circulatory system in man. Study the same and answer the questions that follow:
(i) Label the parts 1 to 4 indicated in the diagram.
(ii) Give one difference between parts 1 and 2 based on:
(a) their structure
(b) the nature of blood flowing through them.
(iii) What is the specific name of the type of blood circulation that takes place between the heart and the lungs?
(iv) Name the valve found at the beginning of the part labeled 3.
State the Location:
Tonsils
Analogy
Arteries : Carry blood from the heart:: _________ :carry blood to the heart.
Identify the CORRECT statement/s regarding blood clotting.
