Question

which organ is formed first in an embryo?

Answer 1

Hi.

here is your answer.


1st brain & spinal cord are formed.

then heart which starts circulatory system.


hope it helps you ☺

Answer 2

the blood and circulatory system, powered by the heart, together form the first organ system to develop. They are essential to carry nutrients and waste around the embryo to keep its cells alive. Throughout our lives, the heart continues carrying out the vital job of pumping blood around our body.
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