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Which part of the body has thin walls that allow oxygen to pass through

User Mona
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2 Answers

5 votes
Capillaries
(I hope this helps !)
User Gumzle
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4 votes

Answer:

Capillaries

Capillaries are the shortest, narrowest, and thinnest blood vessels.

Step-by-step explanation:

good luck

User RandomPoison
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