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प्रश्न
Who discovered the Rh factor? Why was it named so?
उत्तर
The Rh factor was discovered by Landsteiner and Wiener in 1940 in Rhesus monkey. So it was named the Rh factor.
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संबंधित प्रश्न
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 volume of blood in human adults is ______.
______ are produced in the bone marrow.
Blood is a fluid connective tissue.
Name the only artery that carries carbon dioxide-rich blood.
Why is it called an artery if it does not carry oxygen-rich blood?
While learning to ride a bicycle Boojho lost his balance and fell. He got bruises on his knees and they started bleeding. However, the bleeding stopped after some time.
(a) Why did the bleeding stop?
(b) What would be the colour of the wounded area and why?
(c) Which type of blood cells are responsible for clotting of blood?
When a red blood corpuscle containing both A and B antigens are mixed with your blood serum, they agglutinate. Hence your blood group is ______.
