Which of the following characterizes neurulation?
A) The notochord forms a neural tube.
B) The neural tube is formed from ectoderm.
C) A neural tube forms around the notochord.
D) The neural tube forms somites.
E) In birds, the neural tube forms from the primitive groove.

Question

Quizplus · Accepted Answer

Neurulation is the embryonic process in which the neural tube, which gives rise to the brain and spinal cord, is formed from the ectoderm. The notochord plays a role in signaling to the ectoderm to form the neural tube, but it does not physically form the neural tube itself. Somites are formed during segmentation, which occurs after neurulation. In birds, the neural tube forms from the neural folds, not the primitive groove.

Which of the Following Characterizes Neurulation