Which of the following is present at the beginning of 3rd week?
Correct Answer: Primitive streak
Description: Primitive streak appears at the end of the 2nd week of intrauterine life and beginning of 3rd week, epiblast cells in the primitive streak forms the notochord, mesoderm and neural crest cells later in the third week. Disc with three germ layers are formed at 3rd week of gestation. Ref: Gray's 39e/p-210-220
Category:
Anatomy
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now