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Bilaminar disc is formed during which period of embryonic events?

 # Bilaminar disc is formed during which period of embryonic events?
A. 1st week
B. 3rd week
C. 2nd week
D. 4th week


The correct answer is C. 2nd Week. 

The bilaminar disc is formed during the second week of embryonic development. This period is known as the second week because it follows the first week of embryonic development, which primarily involves the formation of the blastocyst. During the second week, the blastocyst undergoes implantation into the uterine wall, and the embryonic bilaminar disc forms. The bilaminar disc consists of two layers called the epiblast and the hypoblast, which are important for the subsequent development of the embryo.

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