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ICSE Class 10 Answered

What is the colour of blood flowing in veins? Why veins appear blue?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer
The colour of blood flowing in veins is pale red. The vein appears blue due to their thick muscular walls.
Answered by | 04 Jun, 2014, 03:23: PM

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ICSE 10 - Biology
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