Question

Which of the following organ is differentiated first during development?

• A. Heart
• B. Skin
• C. Brain
• D. None of the above

Answer 1

The correct option is A Heart

Embryogenesis refers to the process of division and differentiation of the embryonic cells during the early stages of embryo development. In human beings, the zygote or embryo goes through a spatial and temporal changes leading to embryogenesis involving stages such as gastrulation, germ layer formation , histogenesis, neurulation and organogenesis. Following these, the heart is the first organ to be differentiated and developed which starts to beat and pump blood at around 21 or 22 days.

So, the correct answer is 'Heart'