CBSE Class 8 Answered
How the syringes are used to take blood for blood tests?
Asked by Topperlearning User | 19 Aug, 2014, 09:34: AM
Expert Answer
When the plunger of the syringe is withdrawn, the pressure inside the syringe decreases and the blood inside the body (which is at high pressure) moves into the syringe. Thus, syringes are used to take blood for blood tests.
Answered by | 19 Aug, 2014, 11:34: AM
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