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प्रश्न
What are the various components of blood? State their functions.
उत्तर
Following are the various components of blood:
- Plasma: It helps in the transport of food, carbon dioxide, wastes and salts.
- Erythrocytes (RBCs): They carry the oxygen from the lungs to all parts of the body.
- Leucocytes (WBCs): They fight infections and protect the body from foreign particles, like germs and bacteria.
- Platelets: They help in the coagulation of blood by releasing the chemicals that clot blood at the site of injury or wound.
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संबंधित प्रश्न
What are the components of blood?
What makes the blood look red?
The liquid connective tissue A circulates in our body continuously without stopping. This tissue contains a pigment B which imparts it a colour C. The tissue A consists of four components D, E, F and G. The component D fights infection and protects us from diseases. The component E helps in the clotting of tissue A if a person gets a cut. The component F is a liquid which consists mainly of water with many substances dissolved in it and component G carries oxygen from the lungs to all the parts of the body.
(a) What is (i) tissue A (ii) pigment B, and (iii) colour C?
(b) Name (i) D (ii) E (iii) F, and (iv) G.
(c) Name one substance (other than oxygen) which is transported by tissue A in the human body.
(d) Which two components of tissue A are the cells without nucleus?
(e) Name any two organisms ( animals) which do not have liquid like A in their body.
State the Function: Vitamin K
Match the following.
| 1. Leukaemia | (a) Thrombocytes |
| 2. Platelets | (b) Phagocyte |
| 3. Monocytes | (c) Decrease in leucocytes |
| 4. Leucopenia | (d) Blood Cancer |
| 5. AB blood group | (e) Allergic condition |
| 6. O blood group | (f) Inflammation |
| 7. Eosinophil | (g) Absence of antigen |
| 8. Neutrophils | (h) Absence of antibody |
The ______ brings blood containing oxygen and urea from the aorta to the kidneys.
The blood leaving the tissues becomes richer in
What is the special feature present in a human heart which does not allow the mixing of blood when oxygen-rich and carbon dioxide-rich blood reaches the heart?
Name the only artery that carries carbon dioxide-rich blood.
Least abundant leucocyte is ______.
