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CBSE Class 7 Answered

Radha fell down while running. She started bleeding but it stopped after few minutes. Why?

Asked by dharam2311 | 30 Nov, 2018, 09:47: PM
Expert Answer
Our defense system has a unique characateristic feature called blood clotting. After an injury, the clotting mechanism is activated by the release of tissue factor. The blood clot closes off any blood vessels thus stopping the bleeding.
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