Question

When do somites in humans disappear?

Answer 1

Ans. :- Somites are bilaterally paired blocks of paraxial mesoderm that form along the anterior-posterior axis of the developing embryo in segmented animals.

In humans 42-44 somite pairs 9 - 13 are formed along the neural tube. These range from the cranial region up to the embryo's tail.

the first somite pair appears at day 25th and adds caudally at 1 somite pair/90 minutes until on average 44 pairs eventually form.afeter this period this is disappered.

In humans, 42 to 44 somite pairs are formed along neural tube. They are arranged from cranial to caudal section. Several somites disappear after 25 th day of embryonic development and about 35 to 37 somite pairs are counted in end.

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