Biology, asked by exampreparationmsd, 8 hours ago

heart started to develop in foetus by which month ?

Answers

Answered by dazzlingdaffodils

0

Answer:

5 weeks -Two heart tubes have formed in the embryo. The two tubes fuse and blood flows through this tubular "heart" as it begins to beat.

6-7 weeks- Walls begin to form that will divide the heart into four chambers.

Explanation:

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