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Kaplan Qbank USMLE



Author4 Posts
  #1

when is the notochord formed?

  #2

4 th week?

  #3

Formation of the notochord is a third week event, occurring as a relatively early part of development of the trilaminar disc. More specifically, notochord formation begins about day 16 and the neuroenteric canal forms on about day 18.

  #4

yes

also closure of the neural canal in the 25th day the anterior pore and 27 the posterior one







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