Most cell division in the developing neural tube occurs in the
A) hindbrain zone.
B) ventricular zone.
C) ventricles.
D) posterior zone.
E) midbrain.
Question 2
By 40 days after conception, swellings are clearly visible at the anterior end of the neural tube. There are
A) 2.
B) 3.
C) 4.
D) 32.
E) 64.