Blood Platelets
Blood Platelets
Blood Clotting by Platelets:
Platelet cells are present in our blood and they circulate all around the body through it. Whenever there is bleeding these platelets act as a plug to stop it. The clot, which forms at the point of wound, is a microscopic network of insoluble fibrous protein. The cells have granules but no nucleus.
Which of the following are correct ? (a) Blood platelets live for 5-9 days. There are about 250,000-500,000 platelets per microlitre of blood. (b) If number of platelets decreases in our blood it could lead to excess of bleeding that could be fatal for us. | |||
| Right Option : B | |||
| View Explanation | |||
There are about ________________________ platelets per microlitre of blood. | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct ? (a) Platelet cells are present in our blood and they circulate all around the body through it. (b) There is bleeding these platelets act as a plug to stop it. (c) The clot, which forms at the point of wound, is a microscopic network of insoluble fibrous protein. | |||
| Right Option : D | |||
| View Explanation | |||
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